Abstract : From primary to secondary school, teachers’ children get the best results. However, very little research has looked in to the family processes on which this singular success is built. Based on the demonstration of the link between "achieve the best school performance" and "being a child of whom at least one parent is a teacher", this study aims to establish family factors, in particular parental educational practices, that explain this significant "teacher effect". From econometric analysis of the Panel 95 survey, it transpires that, on the one hand, teachers’ children are the most likely to benefit from the best practices of socialization and support at school and, on the other hand, that a "residual" "teacher effect" unexplained by the practices studied, still has a positive influence on school success . The descriptive use of INSEE survey " Education and Family 2003" completes the analysis and highlights three specific educational models of these families: the construction of a complete human being by eclecticism and maximizing cultural practices, the construction of a balanced being by the work on educational opportunities with a priori opposed objectives, and an expert management of the child’s school career by establishing a significant continuity of education, building up then placing a value on non-generic educational information and assessing the institution’s educational work. The study concludes with the remarkable educational transmission work performed by teachers’ families.