The present study examines the relationships between parental beliefs relating to development and education, parenting practices, and the intellectual and academic performances of children. Data were collected for 128 families with a child in the second or third year of primary school. Investigations of the factors affecting the children's performances were carried out using two models that combined the different study variables. Compliance between the data and the theoretical models was tested by path analysis, using LISREL software. The results show a good fit between the data and the models and partly confirm the hypothesis that family educational practices are intermediary variables between parenting beliefs and a child's intellectual and academic performances.