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Parents' income level https://phys.org/news/2014-02-parental-income-strong-predictor-student.html https://phys.org/news/2014-02-parental-income-strong-predict..

• barry-cotter 5y ago
  Three of those are genetically inluenced. The better your educational sysyem is at imparting non-cognitive skills and at removing children from abusive and unsafe environments the more the generits will matter for the same reason genetics mattered more for height in 1900s US than UK, saturation of inputs. As for the one that is in no way genetic > Small class size has at best a small effect on academic achievement, and may harm some students > Reducing class size is seen as a way of improving student performance. But larger class sizes help control education budgets. The evidence suggests at best a small effect on reading achievement. There is a negative, but statistically insignificant, effect on mathematics, so it cannot be ruled out that some children may be adversely affected. https://www.campbellcollaboration.org/better-evidence/small-class-sizes-student-achievement-primary-and-secondary-schools.html https://www.campbellcollaboration.org/better-evidence/small-...