The aim of this paper was to investigate and examine the opinion of students of the Faculty of Educational Sciences of the University of Juraj Dobrila in Pula and the University of Rijeka about family relationships and the impact on children's school success. This paper first explains the family factors that influence children's school success, namely: family, family structure, communication in the family, socioeconomic status and its impact on the family, parenting styles and what impact they have on children, and parental involvement and education of parents. Research has shown that it does not always have to be the case that relationships in the family directly affect school success, but they do affect the child's behavior. Parents often think that the child's bad behavior is not a product of bad relationships in the family, but there are cases where it is and affects school performance. Also, this and similar research proved that parental education, parental involvement had a positive effect on student education. Children whose parents are highly educated encourage and create a better image of schooling, and in this way the child accepts school and everything that goes with it more easily. For the most part, children who come from families with a weaker socioeconomic status often have worse success than children who come from immune families. In conclusion, the family has a great influence in achieving school success.