id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
epaa-1997	Palardy, Gregory J; Peng, Luyao	The effect of summer on value-added assessments of teacher and school performance	2015	26	.pdf	application/pdf	11877	548	49	The model controls for prior achievement, the time duration between the test administrations, and whether the child attended summer school. The HLM results (not shown due to space limitations) provide an explanation: controlling for prior achievement accounts for considerable variation in mean classroom and mean school summer achievement gains, but a much smaller proportion of mean classroom and mean school SY gains.	cache/epaa-1997.pdf	txt/epaa-1997.txt