Education (1) Reproduction (1) Composition (1) Sports records (1) Social status (1) Social classes (1) Schools (1) School attendance (1) School age (Entrance age) (1) Reason (1) Public institutions (1) Impact (1) Hypothesis (1) Equality (1) Athletic ability (1) Measurement (1) Infancy (1) Students (1) Performance (1) Estatus social (1) Absentismo escolar (1) Reproducción (1) Igualdad (1) Desigualdad social (1) Centros docentes (1) Clases sociales (1) Medición (1) Enquête (1) École (1) Bâtiment universitaire (1)