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Submitted by Harry Patrinos on

Good comment, I agree. We need more information about what works to improve learning outcomes. This can only come from rigorous impact evaluations. While we still have a long way to go, there are some things that we know. For instance, for rapid improvers:

Poland: 1999 education reform paid off; extending comprehensive education helped improve learning outcomes considerably; see:

Chile: controversial, but the 1980 reforms which extended learning opportunities and extended choice might be paying off: see for example:;

Mexico: Government intentionally targeted PISA scores and enacted policies to expand opportunities (eg, through the conditional cash transfer program, see for example: and improve school quality (see for example: