This research aims to trace the most important studies in the last two decades of the twentieth century. Those studies dealt with the cognitive effects of the family's just world experience to revel the effect of the personal justice and experience o
n the adolescents' school success. The research sample covers 493 adolescent: 439 adolescent in the intact families and 54 adolescent with single mothers.
Questionnaire that was used as a research tool, consisted of (49) item that are divided into three fields: (1) the Personal Belief in a just world (2), the experiences of mothers' justice (3) school success.
The research main conclusion is that the personal belief in the just world and the mothers justice are both very important indicators in school success i.e. the adolescent aim to learning, school performance and grades). the more they belief that the world is fair with them personally, the more they tended to learn specially those in intact families compared with their peers in families with single mothers. In addition to, the more mother's treatment of children was fair, the more oriented their aims school towards learning and performance and promote the concept of school positive and avoid school failure, especially females were less likely to avoid school work, and more reflective the concept of school-positive than male and thus received school grades higher.
