Identifying Class Size Effects in Developing Countries: Evidence from Rural Bolivia
利用玻利维亚农村学校班级规模的自然变化和教师分配规定，发现班级规模对学生考试成绩有负面影响，对研究教育政策的经济学者有参考价值。
This note implements two research designs that attempt to isolate the effect of class size on achievement. A first strategy focuses on variation in class size in rural schools with fewer than 30 students, and hence only one classroom, per grade. Second, an approach similar to Angrist and Lavy's exploits regulations that allow schools with more than 30 students in a given grade to obtain an additional teacher. Both designs suggest class size negatively affects test scores. © 2006 The President and Fellows of Harvard College and the Massachusetts Institute of Technology.