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New research from Oklahoma suggests preschool doesn’t just help students in the short term

January 2, 2018
Neal Morton
Seattle Times

Cheerleaders for high-quality preschool programs, especially those subsidized with public dollars, face a frequent criticism: Although preschool may prepare more children for kindergarten, research hasn’t yet produced enough evidence that the programs yield long-lasting benefits to justify the cost.

five-year study released in 2015, for example, found that early gains for low-income students who enrolled in Tennessee’s preschool program disappeared after only one year. And by third grade, the effects in some cases were negative.

That raised some concerns that perhaps Tennessee grew its program too quickly, and in turn lowered classroom quality. But in Oklahoma, where state law mandates high-quality standards for all preschool providers, new findings from a study of 4,000 participating children suggest their academic progress lasts well through middle school.

The study, published earlier this month in the Journal of Policy Analysis and Management, found that eight years after students who went through Tulsa’s universal preschool program continued to perform better in math, were more likely to enroll in advanced courses and were less likely to repeat a grade than their peers who never enrolled in the program.

“The most important finding was that the kids who are in pre-K (prekindergarten) are less likely to be retained a grade,” said Bill Gormley, a professor at Georgetown University’s McCourt School of Public Policy and co-author of the new report.

“That’s super important because the consequences of grade retention … tend to be quite negative,” such as higher rates of criminal behavior and lower earnings as an adult, he said. “Any policy intervention that can substantially reduce the likelihood of grade retention is a tremendous boon for the kids and their families and ultimately a boon for taxpayers.”

The study estimated the long-term impact of lowering grade-retention rates for students produces a two-to-one return on what the public spends on Tulsa’s preschool program.