This paper contrasts measures of teacher effectiveness with the students' evaluations for the same teachers using … in follow-on coursework of students who are randomly assigned to teachers in each of their compulsory courses. We find … material, teachers still matter substantially. The average difference in subsequent performance between students who were …

It is difficult to measure teaching quality at the postsecondary level because students typically quot … and tenure decisions. We exploit the random assignment of college students to professors in a large body of required …. Students of professors who as a group perform well in the initial mathematics course perform significantly worse in follow …

It is difficult to measure teaching quality at the postsecondary level because students typically "self-select" their … decisions. We exploit the random assignment of college students to professors in a large body of required coursework to examine … in contemporaneous and follow-on related courses, but the effects are quite heterogeneous across subjects. Students of …