@article {William:February 2005:0190-292X:65,
	author = "William T. Gormley",
	author = "Deborah Phillips",
	title = "The Effects of Universal Pre-K in Oklahoma: Research Highlights and Policy Implications",
	journal = "Policy Studies Journal",
	volume = "33",
	year = "February 2005",
	abstract = "Oklahoma is one of only three states in the nation to offer a free pre-kindergarten (pre-K) program to all students in participating school districts on a voluntary basis. Fortuitous circumstances in Tulsa, Oklahoma, the state's largest school district, permitted an unusually rigorous evaluation of the pre-K program in Tulsa. Because four-year-olds beginning pre-K and five-year-olds beginning kindergarten were administered the same test in September 2001 and because strict eligibility cut-offs were applied, based on date of birth, it was possible to control for selection effects, in addition to gender, race/ ethnicity, school lunch eligibility, and precise date of birth. The evaluation showed strong positive effects of the pre-K program on children's language and cognitive test scores. Hispanic children benefited most from the program, and black children also showed sharp gains, especially when they attended full-day programs. The results are discussed in light of contemporary controversies regarding targeted or universal pre-K programs; full-or part-day programming; public school or multiple delivery sites; strategies for ensuring high quality, effective programs; and the need for rigorous program evaluations.",
	pages = "65-82(18)",
	url = "http://www.ingentaconnect.com/content/bpl/psj/2005/00000033/00000001/art00007"
	doi = "doi:10.1111/j.1541-0072.2005.00092.x"
}