id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
WOS-000301875800004	Tuttle, CC	Using lotteries to evaluate schools of choice: Evidence from a national study of charter schools	2012		.txt	text/plain	221	9	53	In that study, covering 36 charter middle schools in 15 states, we found that charter schools did not affect student achievement or behavior on average, although there was substantial variation across schools. This paper draws on data and experiences observing and analyzing school lotteries from the National Evaluation of Charter School Impacts (Gleason et al., 2010) to describe the challenges associated with lottery-based research.	cache/WOS-000301875800004.txt	txt/WOS-000301875800004.txt