We study the effects of a major change to the school accountability system in England. In 2015, the leading published school performance metric was switched from a threshold measure (essentially the fraction of students above a test score level) to an average score measure. Using 7 years of data on all secondary schools in England, we show that this intervention relatively reduced the test scores of students near the threshold, in favour of groups above the threshold (marginally) and below (substantially). We check the sensitivity of our results to different decisions, and present findings on heterogeneous treatments.

中文翻译：

---

超越门槛：改革学校绩效指标对学生成绩的影响

我们研究了英国学校问责制度重大变革的影响。2015 年，主要发布的学校表现指标从阈值衡量标准（本质上是高于测试分数水平的学生比例）转变为平均分数衡量标准。利用英格兰所有中学 7 年的数据，我们发现这种干预措施相对降低了接近阈值的学生的考试成绩，有利于高于阈值（略微）和低于阈值（大幅）的群体。我们检查结果对不同决策的敏感性，并提出异质治疗的发现。