perte (3) Time (3) Progress (3) Learning (3) Impact (3) Quality (3) temps (durée) (2) établissement scolaire (2) mortalité (2) effet (2) expertise (2) inégalité sociale (2) Mortality (2) Context (2) Children (2) Valuation (2) Social sciences (2) Performance (2) Mortality (2) Meta-analysis (2) Manufacturers' agents (2) Forecasting--Study and teaching (2) Equality (2) Educational equalization (2) Commission merchants (2) Children (2) Knowledge and learning (2) Digital divide (2) Number (2) Performance (2)