„Reducing the number of children with early learning difficulties before joining school contributes to decreasing the number of dropouts and improving school and life success. Furthermore, econometric evidence suggests that return on investment is high if skill development intervention is strategically implemented at an early age compared to the adolescent stage, especially for children from disadvantaged backgrounds.“
Univ.-Prof. Dr. Krisztián Józsa u. a., School Readiness Test and Intelligence in Preschool as Predictors of Middle School Success (2022), S. 2.