Peter Hull's research develops new econometric techniques to answer policy questions in education and health care. A recent coauthored paper, for example, uses randomized school admission lotteries to detect and reduce bias in the kinds of school "value-added models" that many districts use for school closure and reconstitution policies. Another paper directly examines the effect of "charter takeovers" - a particular type of reconstitution in which a public school is closed and converted to a...