Previous charter school research has shown mixed results for student achievement, which could be the consequence of different policy environments or methodological approaches with differing assumptions across studies. This analysis discusses these approaches and assumptions and estimates effects...

This article draws on data and experiences observing and analyzing school lotteries from the National Evaluation of Charter School Impacts to describe challenges associated with lottery-based research. It presents evidence on the prevalence of oversubscribed charter middle schools and compares...

This article draws on data and experiences observing and analyzing school lotteries from the National Evaluation of Charter School Impacts to describe challenges associated with lottery-based research. It presents evidence on the prevalence of oversubscribed charter middle schools and compares...

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...

As part of No Child Left Behind, parents of low-income students in low-performing schools are offered Supplemental Educational Services (SES) for their children. These academic supports, such as extra tutoring or group sessions, take place outside the regular school day. A report and executive...

This paper looks at findings from the first national randomized study of the impacts of charter schools on student achievement.