Such a delinquent, aggressive, stubborn, naughty truancy, low academic performance. Caused by feeling good about themselves as a lack of success in learning.
Like naughty school escape resistant aggressive malicious A low grade, which caused bad feelings toward ourselves, as derived from the lack of success in learning.
For example, offensive to misbehave more naughty and fled to the lower classes which are the result of the feeling that is not good for the Self, from the lack of success in school.