What would it cost to get the most damaged/unprepared student to average performance in 4 years? Probably impossible. Certainly expensive 1/ https://twitter.com/blockedbyadam22/status/913940720318214144 …
Teachers and school seems to make ~10% difference for student outcomes, innate ability >60%. Depressing, I know.
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Link? Did they test schools that met Roland Fryer's standards? Most schools do not make an engineering effort to improve what they do.
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