This study treats the personality characteristics of four kinds of typical students generally found in primary and high schools. This study also approaches the laws of changes of personality characteristics. The findings: carefulness, rigor, self--control,and Perseverance are the main personality varieties which interfere with the study of students. They change the compositional structure of factors in the knowledge, intelligence and personality of students of types B, C and D and make students of other types change to type A and greatly enhance the education quality of primary and high schools.
four kinds of typical students. personality characteristics.