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α: calibrated so average coauthorship-adjusted count equals average raw count
We present results of a randomized trial testing the impact on academic outcomes of providing free eyeglasses to junior high school students in a poor rural area of western China. We find that providing free prescription eyeglasses approximately halves dropout rates over a school year among students who did not own eyeglasses at baseline. Effects on dropout are mirrored by improvements in student performance on standardized exams in math and aspirations for further schooling.