中文摘要：

重要差距在农村、城市的学生之间留在承认的率到高级高中。为这差距的一个原因可能为高级高中是学费和费用的高水平。由减少学生上高中的期望，学费和费用的高水平能在初中学校里正在减少学生大学教师性能。在我们评估的这份报纸，高级高学费消除的影响在穷人的测试分数上编程序农村在中国的第七个等级学生。我们在 Shaanxi 省调查了三个县并且利用了当县邻近对方并且分享类似的特征时，仅仅，三之一实现了一个学费消除节目的事实。用几其他的评价策略，包括 difference-in-differences，倾向分数匹配并且 difference-in-differences 匹配，我们发现学费节目在第七个等级学生的数学分数上有统计上重要、积极的影响。更重要地，这个节目被显示与他们的更富裕的同伴相比在处理组在最穷的学生上有统计上重要、积极的效果。

英文摘要：

A significant gap remains between rural and urban students in the rate of admission to senior high school. One reason for this gap might be the high levels of tuition and fees for senior high school By reducing students＇ expectations of attending high school, high levels of tuition and fees could be reducing student aeademic performance in junior high schools. In this paper we evaluate the impacts of a senior high tuition relief program on the test scores of poor rural seventh grade students in China. We surveyed three counties in Shaanxi Province and exploited the fact that, while the counties are adjacent to one another and share similar characteristics, only one of the three implemented a tuition relief program. Using several alternative estimation strategies, including difference-in-differences, propensity score matching and difference-in-differences matching, we find that the tuition program has a statistically significant and positive impact on the mathematics scores of seventh grade students. More importantly, this program is shown to have a statistically significant and positive effect on the poorest students in the treatment group compared to their wealthier peers.