students' lifetime income by more than $250,000 for the average class- room in our sample. We conclude that good teachers …Are teachers' impacts on students' test scores ("value-added") a good measure of their quality? This question has …' impacts on student achievement and (2) whether high-VA teachers improve students' long-term outcomes. We address these two …

-experimental design based on changes in teaching staff. Using school district and tax records for more than one million children, we find …

aggregate costs of providing mandated programs for disabled children. Little attention has been paid to the effectiveness of … average special education program boosts mathematics and reading achievement of special education students, particularly those … classified as learning disabled, while not detracting from regular education students. These results are estimated quite …

determined bequests from parents that can be used to finance schooling, uncertainty in college completion related to differences … structure, we analyze tuition subsidies such as exist in most public colleges, alternative forms of need-based aid, income … more intergenerational mobility and greater income equality. But, the various policies have quite different implications …

improve students' long-term outcomes. Using school district and tax records for more than one million children, we find that … the present value of students' lifetime income by approximately $250,000 per classroom …Are teachers' impacts on students' test scores ("value-added") a good measure of their quality? This question has …