Chapter 1.Introduction -- Chapter 2. Efficiency-inducing tax credits for charitable donations when taxpayers have heterogeneous behavioral norms -- Chapter 3. Trade Liberalization and Profit Tax Reform Under Oligopolistic Vertical Trade -- Chapter 4. Properties of the Production Possibility...

This study uses administrative data linking students and teachers at the classroom level to estimate teacher value-added to student test scores. We find that variation in teacher quality is an important contributor to student achievement more important than has been implied by previous work....

Value-added measures of teacher quality may be sensitive to the quantitative properties of the testing instruments upon which they are based. This paper focuses on the sensitivity of value-added to a particularly relevant testing-instrument property test-score-ceiling effects. Test-score...