Psychological Study on Education: The Impacts of Teacher’s Aggressive Behavior on Student’s Psychological Health

: This essay mainly focus on what negative psychological influence on student can be taken by teacher’s aggressive behavior can There are still some teachers using aggression to treat their student in some regions. The aggressive behavior of teachers might take negative impacts on both students and teachers. The main objectives of this study are the impact of Teacher's aggressive behavior on student's emotions in the short term, Unnormal personality caused by long term negative impacts on emotions, The negative personality effect on psychological health, and the serious psychological illness causes the extreme phenomenon. To find out the objectives, this study used literature review and case study. The literature and cases searched mainly focus on teenagers aged 17-18 years old study in primary and middle school in China from other scholars. The main finding of this study is that teacher’s aggression can take different extent of psychological impacts. Firstly, the negative emotions such as upset and unhappy can be caused. Additionally, the unnormal personality be caused such as loss of confidence, guilt, antisocial behavior, etc. Furthermore, psychological illness such as autism, anxiety disorder, depression. What’s more, some extreme phenomenon can be caused such as suicide. Moreover, this study may point out what kind of psychological illness could be caused, which might make people realize the severity of aggression.


Introduction
Currently, the development of education has strongly connected students to teachers. In addition, the mental health of the students is highly valued by society. However, there are still some teachers who use violence to educate their students, simply and rudely. Aggressive behavior is a harmful behavior that inflicts damage or other harm on another individual. It can occur passively as well as forwardly, and can also be classified as physically or verbally. It can be the result of sever-al types of reasons. Moreover, aggressive behavior destroys interpersonal relationships and violates social boundaries. The aim of this essay will investigate that the negative psychological influence of teachers' aggressive behavior on teenagers. The reason to study this aim is to solve the problem between students and teachers. Therefore, the teachers can teach in a more efficient way and re-duce the probability of psychological problems of teenagers. In my previous review of literature, I found that there are fewer scholars who point out the specific psychological influence on teenagers.
There are three types of corporal punishment. The first one is mild punishment. The mild punishment does not touch the student body or touch in a symbolical way. This type of punishment does not take an obvious negative influence on teenagers. This negative influence includes a larger mood swing and uncomfortableness. The mild corporal contains many forms. The most common form is standing in the corner, pulling the ears, hitting students on the palms, etc. The degrees of mild punishment on students who make mistakes are different. The degree of mild punishment depends on the type of mistakes and the severity of the impacts of fault. The second category is moderate corporal punishment. The way of moderate corporal punishment is similar to mild punishment. The main form of moderate punishment is asking students to engage in one motion excessively. For example, assigning too much homework for students, running for a long time. Moreover, moderate punishment includes depriving students' physiological drive. For example, do not let students eat lunch and do not let students take a break, etc. In addition, the consequences taken on students are more adverse than mild punishment. The main form of corporal punishment, However, the consequence does not make students lose their working capacity. The main characteristic of moderate punishment is having subjective willfulness, which means a teacher may expect what negative effects they caused but they still do the punishment to their student. Furthermore, moderate corporal punishment may offset the positive educational effect. The last form of corporal punishment is severe punishment. The severe punishment can take acute pain for students. The pain includes shock, excessive blooding, paralysis, and syncope, etc. The more serious consequence is resulting disability or the death of students [1].
Here are some reasons why some teachers use corporal punishment to treat their students. Some teachers are paid much attention to students' academic scores so they only like to teach the highachieving student. In addition, those kinds of teachers are more patient with high-achieving students. Therefore, the high achieving-student are getting more well treatment. Abuse is made harmful causes from one to other things and the effect can be taken to both the violent party and masochist. On the other hand, low-achieving students are abused by their teachers. Corporal punishment (or can also be called physical punishment) is one's taken mainly physical pains or discomfort in response to other people. The main types of corporal punishment are standing in the corner, beating the palm, spanking buttocks, etc. Those teachers abuse their students even using corporal punishment to treat their students [2]. Some teachers think abusing their students is rational. Most of them think if they do not treat their student in that way, their student will not make progress in their study. For example, in 2009, one class tutor in Shaanxi China was often abusing her student alias Tingting. In addition, the tutor often abuses this student without reason. This behavior takes much psychological pressure on Tingting. Moreover, because of the high expectations of students, teachers use short-term and furious ways to treat their students to force them to get a high grade [3]. Some teachers put on a stern face to make students listen and submit to them because they want to defend their honor [3]. Furthermore, trivial matters in their daily life. may make teachers with terrible emotions. The negative emotion cause teachers to treat students in an adverse way [3]. This way is even verbal aggression and physical punishment. On the other hand, teachers' corporal punishment behavior may take many negative influences on students. The inferiority complex is a people feeling of inadequacy and inferiority. It is one type of mental and physical limitation. Corporal punishment can hurt the self-esteem of students and lead inferiority complex. Therefore, they may no more pro-active to their life and their study, afraid to show their talents and communicate with others. Additionally, dual personality can be caused. The dual personality is not a normal psychological phenomenon. It can also be called dissociative identity disorder. It is people who have dual personalities means they will have two personalities and people who have this psychological problem will act different behaviors at different times. Furthermore, reverse psychology is Support one course of action only to persuade the other to take the opposite. Some teenagers may have reverse psychology, so they may not be open to the opinions of others. The other significant cause is that teenagers may have restlessness, loss of hope, anxiety, and pain, etc. [4].
To analyze the reason for their corporal behavior by concluding the reason the study set before. Many corporal behaviors have purposefulness especially for teachers who mild punishment to treat their students. The main reason is to make those students who make mistakes remember not to make this mistake again through corporal punishment. Most teachers who do the mild punishment are kind expressions because those teachers want their students to perform more excellently [1].
Here is the case in Taiwan Kaohsiung. In 2010, One teacher in Kaohsiung Taiwan ask for their student to get their exam score more than 90. If there is one mark less than 90, the teacher will hit the palm once. The number of beats will depend on how much mark less than 90. However, some teacher abuses their students excessively. Here is a case about excessive corporal punishment. On September 5th in the Year 2005. Xiao Dong (pseudonym), a student from Lanzhou Lanhua No. 3 Primary School, was severely beaten by a teacher surnamed Zhao because he did not finish his homework. Many students in the class were scared to cry. Later Zhao's teacher asked each to bring a wooden bar to school in the afternoon, and write his name on the wooden bar, who made a mistake, writing his name with the wooden beater.
Most teachers who are doing moderate corporal punishment have strong subjective willfulness. This means they can expect the worse consequence caused by their corporal punishment but still do it on their students. In addition, teachers have obvious negative emotions during the abuse of their students. This acting and mentality can blow the self-respect of students and contain undesirable education motivation [1]. Here is a case, On Monday morning on 22 May 2000, Shaanxi ZhuangTou Township Liu Chi elementary school math class, which on Period 3. The math teacher Li, check the homework that she arranged about 56 math questions on Friday afternoon. There were eight students in the class has not been finished. Hence, the teacher made these 8 students stand on the platform in a line. Then let 18 students who did the math homework slap the eight students who did not do the math question 10 times per person. After getting 180 slaps in the face, the faces of the eight students were swollen. There are three boys and five girls of these 8 students. Some of these students did not go to class in the afternoon because of the pain and shame. It is no doubt this teacher have strong subjective willfulness, which harms the self-respect of her students This essay will mainly focus on investigating teachers' violent behavior which focuses on two types of it, which are abuse and corporal punishment. Then summarize how this kind of behavior can take negative psychological influences on teenagers. This study will use the method of literature review to summarize, prove and argue the previous study. The introduction has already point-ed out the main negative causes of teachers taking to their students. Then the methodology part will point out the research method this essay will be used. The whole essay viewpoint is based on the theory that previous scholars come before. Then summarize and analyze their theory. In addition, the analysis part is concentrated on the main objectives which to find out the aim of this study. The theme of the first part is to find out the impact of Teacher's aggressive behavior on student's emotions in the short term. Moreover, the theme of the second part is to analyze unnormal personality caused by long term negative impacts on emotions. Further, the theme of the third part is to investigate the negative personality effect on psychological health. Furthermore, the last part is to find out the serious psychological illness causes the extreme phenomenon.

Literature Review
This study will use the literature review to summarize and analyze the psychological impact of the aggressive behavior of teachers from other scholars' cases. The literature mainly focuses on the student and teacher in primary school and middle school in China. Most pieces of literature analyze the negative psychological influence caused by corporal punishment and abuse. Those students are mainly 7-18 years old. Most of their responsibility is being educated. Therefore, they are strongly related to teachers' behavior and most of them may be influenced by their teacher's behavior and motivation in their school daily life. Hence using the viewpoint of the scholars is more persuasive and reliable. The second method this study used is the case study. The cases collected mainly from other scholar's literature and news. This study will quote the cases to analyze the main objectives of this study. The cases can prove the viewpoints and help to analyze the view-point more specific. Moreover, the case is real, therefore this method is highly reliable.
The first main viewpoint of the study is that the teacher's aggressive behavior can cause a loss of confidence of students. Firstly, aggressive behavior can cause students to have a sense of inferiority-ty. Therefore, these students who are treated with aggressive behavior are lost confidence [4][5][6][7]. Students may think they are not clever enough or they do not have the ability to study the subject they learned therefore they may feel worthless [5]. Self-esteem is one's overall opinion of themselves. Positive and healthy self-esteem is one feeling good about yourself and seeing yourself as deserving of the respect of others. If teachers abuse or punish their students, their self-esteem will be shattered. Additionally, they will lose their confidence [5,[7][8][9]. Here is a case about that a physics teacher in one school did not have enough practice paper in the class, so she told a girl who did not get the paper any need to do the question paper. She said " you are not good in physics; it is a waste of time for you to do the question. So, you do not need to do this paper." After that, this student's self-esteem was shattered. Moreover, she also loses interest in the physics class anymore [5]. Hence the loss of confidence may cause students timid and they may afraid to try new matters [6].
Here are the effects of teachers' aggressive behavior on students' studies and grades. Firstly, the aggressive behavior of students can cause students to lack imagination and impaired observation [5,7,10]. In addition, students are easily distracted during studying their subjects [5,7,10]. Furthermore, the thinking of students who are often treated by aggressive behavior may become dull [5,7,10] even could lead to loss of memory of the knowledge they learned [5,7].
The causing of serval types of negative emotion on the student is also an impact of using aggressive behavior from the teacher. When students are abused by their teacher, they may feel very nervous. If the teacher often abuses their students, students will be nervous about answering the question in the class and maybe nervous to communicate with others [5,7]. Additionally, aggressive behavior can cause students cowardice and oversensitive [4,7,10]. In addition, students may think they are not recognized by other people and may have a sense of loss [5,7]. The negative emotions sometimes may cause psychological illness. The most common psychological illness caused by a teacher's aggressive behavior is an anxiety disorder. The main characteristic of anxiety disorder is the dysphoric mood. The major performance of anxiety disorder is feeling nervous, fell restless, feel worried, etc.
A teacher who uses aggressive behavior on their student may take a negative effect on students' life. Students who are treated by corporal punishment may lose interest in their life even remain passive and pessimistic [4][5]8,10]. Furthermore, some students will lose interest on study and are wary of studying in school [6,10]. Some students may give themselves up as hopeless in their daily life [5,9,10]. Aggressive behavior can also affect students to imitate the aggressive behavior from their teacher even has antisocial behavior and have violent behavior [4][5][6][7]10]. In addition, severe antisocial behavior can cause students to have antisocial behavior disorder. Anti-social personality disorder has characteristics of highly aggressiveness, lack of shame and social maladjustment, etc.
If the aggressive behavior is excessive, some students will have a psychological illness. The most common psychological illness caused by a teacher's aggressive behavior is anxiety. Many researchers state out teachers' aggressive behavior can cause students to have anxiety [4][5]7,10]. Some students will have test anxiety [5]. The test anxiety is absent-minded in class, feeling very nervous before the examination. Furthermore, some students may have obsessive-compulsive disorder [7]. People who have obsessive-compulsive may do some useless things and often repeat some given actions by themselves. Moreover, reverse psychology exhibits not believing others, performing intractable to teachers and parents, and do not follow the rules, etc. Students may have reverse psychology and hate their teachers who do aggressive behavior on them [4][5][6]8]. Even these students will revenge their teacher in the same way such as abuse or cause body conflict [4,10]. Some students may also have eccentric personalities, which do not like to communicate with others and do not adopt others' opinions and suggestions [4,6,[7][8].
Teachers' aggressive behavior can cause serious detriment to their students. Depression is a normal depressive disorder. The characteristics of people who have depression are mainly feeling upset and are pessimistic about their life. Some students who are treated for aggressive behavior may have depression [5,7,10]. Moreover, some of these students who have depression may suicide [10].

The Impact of Teacher's Aggressive Behavior on Student's Emotions in the Short Term
Teachers' aggressive behavior can make the student have negative emotions in their study and their daily life. Aggressive behavior can cause students unhappy and upset in a short period. If teachers do aggressive behavior on their students on public occasions such as they do aggressive behavior on their students in a classroom or playground in a school or other occasion where are many other students there, students who are treated by aggressive behavior will become embarrassed. Here is one case, on March 23rd, 1998. A student is treated by corporal punishment in his classing meeting because he did not wear the school uniform. The form of the punishment, in this case, is slapped in his face in front of the class and the teacher makes this student stand in the corner until home time.
It can be seen that making this student stand in the corner of the classroom may make this student embarrassed because there are many students in the classroom and slapping the student in his face can make the student upset and nervous. The behavior of this teacher injures the self-esteem of the student. This will make a negative impact on students' psychological health. Because students are mostly teenagers. Teenagers have very high self-esteem. If the teacher hurts the self-esteem of the teenagers, they are easy to have a sense of failure and loss. However, if teachers often do aggressive behavior on their students. They make become upset very often. Moreover, always abusing students may cause them to hate to study and do not like to attend class. Some students may afraid to challenge themselves such as they may be nervous in examinations. They are afraid of taking examinations may because that they are afraid to be treated by corporal punishment or abuse from their teachers if they get a low grade. Furthermore, they may afraid to answer questions in class because teachers may abuse them if their answer is not the same as the correct answer. All of those impacts mentioned above can affect the grade of those students.
Here is one case, on September, 28th, 2021. On student in Huaihua, Hunan in China was slapped in his face in front of the class. Therefore, this student told their parents he did not want to go to school anymore. From this case, it can be clear that do aggressive behavior on the student will make them afraid of their teacher and hate to go to school to study. In addition, using aggressive punishment to treat their students will make them lose confidence in their study and their skills. What is more, doing aggressive behavior in front of other students can also make those students nervous, because they may afraid of if they may be treated by the corporal punishment by their teacher next time if they make trouble.

Unnormal Personality Caused by Long Term Negative Impacts on Emotions
If a teacher's aggressive behavior continues for a very long period, the bad emotion of students may turn into an unnormal personality. Students who have this kind of unnormal personality may take negative impacts on society and the unnormal or negative personality will make those stu-dents who have it get in trouble with communicating with other people.
Here is a case, on May 22, 20XX, many students are treated with aggressive behavior by their teachers, the form of the aggressive behavior is to ask other students who had done the homework to hit that student who had not done their homework 10 times. Most students who did not do their homework were crying in the class. Moreover, there are five girls and two boys who did not go to school because they were feeling embarrassed and afraid of their teachers. [11] Based on this case, firstly, the teacher's aggressive behavior on students normally makes students lose confidence. The loss of confidence of students is because the student may become embarrassed in public occasions if the teacher uses aggressive behavior to treat them especially abuse them. The other reasons that cause student to lose their confidence is that those students are mostly teenagers, many teenagers hope to get praise from other people to show that they are having high achievement in some areas. This is because teenagers want to show them up to get a sense of achievement and want other people to adopt them. If teachers do not encourage their students' grade or their learning outcomes but abuse the students, they may think they cannot do something well then, they may do not want to try this matter in the future. This will cause them to be wary of their study and may also lose interest in other things in their daily life. In addition, students will become oversensitive to their daily life if their teachers do aggressive behavior on them. People who have oversensitive mainly performed as often think other people missay them when other people talk in a lower voice. The oversensitive people also performed as if other people look at them unreasonably, they may think they did something wrong. The teacher's aggression can cause this problem, a student may afraid to look at the teacher and when teachers look at them, they may think they did not perform well in class or they may think their students do not like them. Hence, they may also do not like to communicate with others any longer because they may afraid to say something wrong when communicating with others and they may also feel embarrassed to communicate with others. Do not like to communicate with others may cause many troubles that may not be solved in their daily life and it is not beneficial to make good relationships with other people in society. These students may have seclusive personalities Therefore, they will have less social capital to make progress for themselves. Additionally, the aggressive behavior of teachers can be imitated by their students. In this case, the student who hit their classmate may imitate their behavior in class after class or in their daily life. Some other students who also hit their classmates may have a sense of guilt. The students who do not do their homework may also revenge the students after school who hit them in the class. If the students are often treated in this way, they may have antisocial behavior such as disturbing public peace. However, both two kinds of students who did or did not do the homework, in this case, may have the propensity of violence in the future daily life. Furthermore, if the teacher often uses this kind of aggressive behavior to treat their students. The students will lose interest in this subject even lose their studies. Therefore, their study skills may not be improved and they may not find the strengths of their study.

The Negative Personality Effect on Psychological Health
The change of student's unnormal personality causes psychological illness of students who are treated by aggressive behavior. Here is one case, March 23rd, 1998 The student Ma in one school set in Hebei is treated with aggressive behavior because he did not wear his school uniform. His teacher slaps him in the face several times and ask him to stand in the corner of the classroom until home time. This teacher also used aggressive behavior to treat him for other reasons several times. Later, the students in Ma's school were cool off toward him. Ma did not want to communicate with other people and was afraid to talk with others, had low quality of sleeping, had a nightmare, imagined his teacher as a monster, did not want to go to school, etc. After that, Ma's parents took him to see a doctor and Ma got the psychological illness [1].
From this case, it can be seen that the high frequency of teachers' aggressive behavior on students can make them have unnormal personalities even the high extent can cause psychological illness. Firstly, the aggressive behavior of Ma causes him to not like to study and go to school, this may easily cause him to lose interest in his life. If one person loses interest in life for a very long time the person would have a depressive disorder. In addition, the afraid of communicating with other students can also cause depression, and there are some other disorders such as autism. Moreover, often do aggressive behavior on students can make them have psychological inversion. The student who has psychological inversion does not listen to others' advice; revenge teachers even have an antisocial personality disorder which can take a huge negative effect on society. Furthermore, the insomnia of Ma is one type of anxiety phenomenon. Students who are treated with aggressive behavior are likely too afraid of the future about their grades and the relationship between them and the people around them. Therefore, aggressive behavior may cause teenagers to have anxiety. One type of anxiety is test anxiety. Students who have test anxiety mainly performed as afraid they cannot get a high grade in their future examination hence the student may have a low quality of sleeping because they are worried about it. The complication of anxiety is an obsessivecompulsive disorder also called OCD. Obsessive-compulsive disorder is one type of anxiety disorder. People who have obsessive-compulsive disorder often repeat doing something meaningless even repeat doing something, not against their will in their daily life. These people want to resist meaningless things but they cannot control them. Teenagers who got obsessivecompulsive disorder may have many troubles in their study and their daily life. Additionally, students who are often treated with aggressive behavior may have persecutory delusion. People who have persecutory delusions may always be vigilant for everything and they are very cautious in their daily life. This may be because teachers' aggressive behavior may cause them to think their teacher or people around them may do the aggressive behavior on them in the future. In addition, all of the disorders above mentioned could cause teenagers to have schizophrenia. Teenagers who have schizophrenia may have most of the disorders mentioned above. In a word, a teacher's aggressive behavior could take much psychological illness for students. The psychological illness would take a huge negative impact on students' study and daily life.
Here is another case. 4th November 2005. An owner of one gas station in Sichuan province found his son's dead body away from 40 meters from the gas station. The student also wrote a posthumous paper. He said " Because I smoking and drinking, my teacher usually makes me write self-criticism and also aggression me in the dorm and playground of our school...Some teachers treat me as a thief...I think I will always be a cut below others." From this case, the student's selfesteem is hurt violently. He said he always be a cut below others, this phenomenon caused this student does not to want to talk with others because of a sense of inferiority. Afraid to talk with others may also have the illness of Social Phobia. People who have social phobia do not like to communicate with others even want to always stay alone. The sense of inferiority may cause people do not to feel confident when they doing one thing. Therefore, they will often delay the things they need to do. This is also on psychological illness called procrastination.

The Serious Psychological Illness Causes the Extreme Phenomenon
As this study mentioned above, students may have psychological illnesses such as depression, anxiety, schizophrenia, etc. caused by teachers' aggressive behavior. Teenagers who have these psychological illnesses fearfully may be doing some extreme behavior. Here is some case.
April 12th, 2003. One student in Chongqing China was late for school. Her teacher used the wooden board to strike her hands. The teacher also used insulting remarks to treat her. She said " You are not good at studying. And you are not good-looking, too. You do not even deserve to be a barmaid." Later this student wrote the posthumous paper and jumped from the building that day [1].
In this case, the teacher used insulting language to treat her student. This will hurt the student's self-esteem. The student in this case may have depression for a short time. If teachers use insulting language to treat their students, students' self-esteem may be hurt. Some students who have high psychological enduring capacity may not be hurt if the teacher seldom abuses them. Students who have low psychological enduring capacity may be hurt by abuse and also do extreme behavior such as suicide. However, if teachers use insulting behavior to treat their students very often, students may do extreme behavior whatever they have a low psychological enduring capacity or not.
Here is another case. August 7th, 1990. A student got five math problems wrong in the final exam. The teacher stipulated in the winter vacation, every wrong math problem in the exam, the holiday every day to do 100 times. As a result, he was punished 500 times a day, 10,500 times over 21 days of vacation, and had to complete his winter homework. Zhang Meng did not finish this homework, and he was afraid his teacher may be mad at him. Therefore, on the first day of school will jump cliff suicide.
The teacher's behavior in this case seems not to harm the students directly. But making students write the math problems too many times could make students under pressure. The student may become anxious and afraid for their teacher and do not want to go to school. The student in this case is afraid to face this problem. This may mainly be because the teacher sets too much homework on the student so the student does not have his own choice to do the things he likes and make him very under pressure at the holiday time. Setting too much homework seems to be one type of aggressive behavior because if students cannot hand in the homework on time, they may become very upset and under pressure. During they doing a huge amount of homework they may afraid of the bad result on them in the future. This phenomenon is also one type of anxiety. When the anxiety on a student to a serious extent. The student may suicide to escape from the reality. In conclude for this part, the teacher's aggressive behavior can cause extreme events to happen if they do this for a long period. The extreme event may be accumulated by the teacher's aggressive behavior time by time or the student's psychological illness caused by the teacher's aggressive behavior.

Conclusions
In conclusion, this study analyzed the teacher's aggressive behavior may take many negative impacts on students' psychological health. There are three types of aggressive behavior. Mild punishment, moderate corporal punishment, and severe punishment. Moreover, a teacher who does aggressive behavior for different reasons will do different types of punishment. There are many reasons for teachers to use aggression to treat their students. Most teachers want to use aggression to encourage their students to improve their studies or want them to get high examination grades. Some teachers are using aggressive behavior to abreact their own negative emotions. Different types of aggressive behavior can cause different impacts on students' psychological health. The method used in this study is mainly literature review and case study. Because the viewpoint this study quoted is mainly from other scholars and most of the viewpoints are be approved by the academic community so the viewpoint quoted in this study has an extent of reliability. Drawing on the works of literature and viewpoints from other scholars. This study has demonstrated that teachers' aggression can take negative impacts on students' psychological health. In addition, this impact on the student will not be shown immediately at the beginning which may just take some negative emotion such as embarrassment, upset or unhappiness, etc. on the student. Then the negative emotion may cause some students to have some unnormal personalities such as loss of confidence. Some students who have unnormal personalities may have psychological illness if the teacher often uses aggression to treat them. Some psychological illnesses such as depression may contribute a student to do some extreme behavior such as suicide. The different extent of the negative impacts on a student may depend on the frequency that the teacher does the aggressive behavior on this student and may also depend on the student's psychological enduring capacity when they get hurt. However, teachers' aggressive behavior can take a different extent of negative impacts on students most time. Therefore, a teacher can use some high-efficiency method that will not hurt the students such as encouraging them if they have problems with their study or their daily life. In addition, it is not beneficial for the teacher to abuse their student especially talking about this student's privacy. The government must make some rules about controlling teachers' aggressive behavior on the student so that can protect students from getting the psychological illness.
The strength of this study is that most of the opinion of this essay are expounded from other scholars' literature, which means the viewpoint this essay quoted have authority. The discussion part of this study used a case study to prove and analyze the opinion of this study given which means the point is highly reliable because all of the cases in this study are signed by the source that can show the case is true. The weakness of this study is the limit of the region, this study only researches the aggressive behavior of the teacher in China. Therefore, some of the cases and opinions in this study are not representative for other countries. Moreover, it is difficult to define whether the student's psychological illness is caused by the teacher's aggressive behavior or not in some cases.