This brief summarizes the results of a gender impact evaluation study, entitled Incentives to learn, conducted between March 2001 and March 2002 school year in Kenya. The study observed the impact of merit scholarship program on adolescent girls in Kenya on the student level. Girls who were eligible for the scholarships had significantly higher test scores than comparison schoolgirls. The effect size was about 0.2 to 0.3 standard deviations. Teacher attendance also improved significantly in program schools. There were positive externalities on girls who started off with low baseline scores who had little chance of receiving the scholarship. There is evidence that the scholarship program did not reduce intrinsic motivation. Funding for the study derived from the World Bank and the MacArthur Foundation.