State assessments are increasingly used as outcome measures for education evaluations, and such evaluations generally use pretest scores as control variables. The correlation between the pretest and outcome (posttest) measures is a factor in determining, among other things, a study's statistical...

This article uses data from Ohio, a state that allows a wide range of organizations to authorize charter schools, to examine the relationship between type of authorizer and charter-school effectiveness.

This paper uses individual student-level data from Ohio–which permits a wide range of organizations to authorize charter schools—to examine the relationship between type of authorizer and charter-school effectiveness, as measured by students’ achievement trajectories.

This paper examines the charter school authorizing process using student-level data from Ohio, a state with a range of public and private authorizers. The study found charters authorized by nonprofits are less effective in promoting student achievement than other charter schools (though there...

There are many ways to use student test scores to evaluate schools. This paper defines and examines different estimators including regression-based value-added indicators, average gains, and successive cohort differences in achievement levels. The paper helps assess which methods provide useful...