The Economist recently published a brief and pessimistic summary of the IDB Peru study. Their writer looked only at standardized math and reading tests as measures of success, ignoring large improvements in cognitive skills. Or maybe, as Richard Jennings suggests, they didn’t read to the sixth sentence of the study:
Too right. Unlike traditional standardized tests, cognitive studies tests are more likely to demonstrate the sort of growth envisioned by constructionist approaches to learning: exploration, empowered learning, and creativity.
There were three separate cognitive skills tests measured by the IDB. All four showed large improvements – equivalent to 5-6 months of cognitive development. As the report notes, “these are sizable effects under this metric considering that the treatment group had an average exposure of 15 months” — that’s like getting an extra 3 years of cognitive development by the start of highschool; something worth further study.