2025-02-212013-06-03https://dash.harvard.edu/handle/1/42715138I am a professor in Uruguay, and I don't have access to the Review of Economics and Statistics. I read a very interesting article that cites this work, and thought I might review both for a local newspaper, illustrating what works and what doesn't to improve education. I care about education, and sometimes here decisions are made without much information. I thought this might help.