Charter schools are highly debated in policy and political discussions about delivering public education. As "laboratories of innovation" that often use lotteries to assign spots, they hold the potential to generate rigorous evidence about effective educational practices. This paper synthesizes and summarizes findings from charter…

The past three decades have seen charter schools emerge as a prominent and controversial alternative to traditional public schools. This policy brief examines "Thirty Years of Charter Schools: What Does Lottery-Based Research Tell Us?" which summarizes 40 studies that have used lottery research designs to analyze how charter schools…