Just how important is good preschool in the course of a child’s life?
Skeptical researchers have contended that it doesn’t really matter, that preschool provides only short-term educational assistance that fades out after a few years. But new findings from a continuing study of 4,000 children in Tulsa, Okla., should put that contention to rest. High-quality prekindergarten has powerful long-term cognitive effects.
The researchers, based at Georgetown University, began tracking these children in 2006 and followed them through the eighth grade. As eighth graders, they were less likely to be held back than their classmates who did not attend preschool, and their scores on the state’s math achievement test were higher. They were also more likely to take algebra in the eighth grade — a consistent predictor of college readiness.
It’s not just that the Tulsa preschoolers were ahead of their peers academically when they got to kindergarten. While the gap in math achievement narrowed over time, the students who had gone to prekindergarten still maintained an academic advantage in middle school. When the researchers used the Tulsa data to project the impact of the program into adulthood, they concluded that because of those youngsters’ higher projected income and diminished likelihood of incarceration, every dollar invested in quality preschool could generate a two-dollar return.