As states and districts expand access to publicly funded PreK programs, researchers and policymakers have been grappling with experimental evidence demonstrating that the benefits of PreK on academic skills are not likely to last into early elementary school. A leading hypothesis to explain this phenomenon is that PreK and the elementary grades…

Amargosa Valley School in Nevada could be considered representative of almost any preK-8 school that serves a large proportion of socioeconomically disadvantaged students and is focused on turning around persistently low achievement. Like other schools supported by federal School Improvement Grants, Amargosa is beginning to implement a reform plan…