This paper studies a large-scale educational expansion to assess whether shocks to educational inputs affect the academic achievement of adult education students. I analyze the effects of a Swedish program that rapidly doubled enrollment in adult education, thus straining school resources. The program targeted low-educated, unemployed adults aged 25 and older. Therefore, my analysis focuses on students under age 25 to reduce the risk that changes in the characteristics of the study sample drive my findings. First, I show that students in regions subject to stronger enrollment expansions experienced stronger negative shocks to educational inputs, including teacher credentials, per-pupil expenditure, and peer quality. Second, I show that the stronger negative shocks to these inputs coincided with larger increases in course dropout. Taken together, the two sets of results suggest a causal link between educational inputs and students’ academic progress in adult education.

本文研究了大规模的教育扩张，以评估教育投入的冲击是否会影响成人教育学生的学业成绩。我分析了瑞典一项计划的影响，该计划使成人教育入学人数迅速增加了一倍，从而导致学校资源紧张。该计划针对的是 25 岁及以上受教育程度较低、失业的成年人。因此，我的分析重点是 25 岁以下的学生，以降低研究样本特征变化影响我的发现的风险。首先，我表明，招生规模扩大较大的地区的学生经历了对教育投入的更强烈的负面冲击，包括教师资格、学生人均支出和同伴质量。其次，我表明，对这些投入的更强烈的负面冲击与课程辍学率的大幅增加同时发生。综合起来，