Do teacher unions affect the productivity of public schools? The authors examine this question using individual student data from the Sustaining Effects Survey sponsored by the U.S. Department of Education. Holding resources constant and using achievement gains on standardized tests as the...

This paper examines the effect of collective bargaining on several factors known to be determinants of student achievement in the public schools, particularly its effect on the teacher's allocation of time among various activities. Estimates based on a national survey show that bargaining...