The dirty secret of education is that no school outperform nor underperform much other schools when adjusting for differences in student populations : https://

The dirty secret of education is that no school outperform nor underperform much other schools when adjusting for differences in student populations : https://freddiedeboer.substack.com/p/why-selection-bias-is-the-most-powerful-force-in-education?s=r https://freddiedeboer.substack.com/p/why-selection-bias-is-t...