This article presents the first value-added model of private school effect in Ethiopia, using the unique Young Lives longitudinal data. I found a substantial and statistically significant private school premium (about 0.5 standard deviation) in Maths, but not in Peabody Picture Vocabulary Test (PPVT). Private school premium works for both low and high ability children. The results are robust to sorting on unobserved ability, grouping on lag structures and transfer between private and public schools. Combined with available contextual data, empirical evidence suggests that the effectiveness of private primary schools may be due to more learning time and teacher’s attention enjoyed by students. I also attempted to contribute methodologically to the literature by directly testing the structural assumption underpinning value-added models.

中文翻译：

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估算埃塞俄比亚小学生私立学校保费：来自个人层面面板数据的证据

本文使用独特的 Young Lives 纵向数据，展示了埃塞俄比亚私立学校效应的第一个增值模型。我在数学方面发现了大量且具有统计意义的私立学校溢价（约 0.5 个标准差），但在皮博迪图片词汇测试 (PPVT) 中却没有。私立学校保费适用于低能力和高能力儿童。结果对于未观察到的能力排序、滞后结构分组以及私立和公立学校之间的转移是稳健的。结合现有的背景数据，经验证据表明私立小学的有效性可能是由于学生享受更多的学习时间和教师的注意力。我还尝试通过直接测试支持增值模型的结构假设，在方法论上为文献做出贡献。