RT Journal Article SR Electronic T1 Africa’s Skill Tragedy: Does Teachers’ Lack of Knowledge Lead to Low Student Performance? JF Journal of Human Resources JO J Hum Resour FD University of Wisconsin Press SP 0616-8002R1 DO 10.3368/jhr.53.3.0616-8002R1 A1 Jan Bietenbeck A1 Marc Piopiunik A1 Simon Wiederhold YR 2017 UL http://jhr.uwpress.org/content/early/2017/04/18/jhr.53.3.0616-8002R1.abstract AB We study the importance of teacher subject knowledge for student performance in Sub- Saharan Africa using unique international assessment data for sixth-grade students and their teachers. To circumvent bias due to unobserved student heterogeneity, we exploit variation within students across math and reading. Teacher subject knowledge has a modest impact on student performance. Exploiting vast cross-country differences in economic development, we find that teacher knowledge is effective only in more developed African countries. Results are robust to adding teacher fixed effects and accounting for potential sorting based on subject-specific factors.