Jun 03, 2025
New publication on the long-term consequences of shortened schooling
This study estimates the lifetime effects of lost classroom instruction on labor market performance. For identification, the author uses historical shifts in the school year schedule in Germany, which substantially shortened the duration of the affected school years without adjusting the core curriculum. The loss of classroom instruction was mainly compensated for by assigning additional homework. Applying a difference‐in‐differences design to social security records, the study finds adverse effects of the policy on earnings and employment over almost the entire occupational career. Plausible mechanisms behind the deteriorated labor market outcomes include unfavorable effects on human capital and differential occupational sorting.
Source: Cygan-Rehm (forthcoming). Lifetime Consequences of Lost Instructional Time in the Classroom: Evidence from Shortened School Years. Journal of Labor Economics. DOI: 10.1086/736549
A longer, non-technical summary of the study can be found here.