President Obama and others have demonstrated considerable interest in the Tulsa school-based pre-K program, one of a handful of universal pre-K programs in the U.S. The short-term effects of high-quality pre-K on school readiness are now well-established. At the same time, questions have been raised as to whether these effects persist over time.…

This article assesses the effects of Tulsa, Oklahoma's school-based prekindergarten program on the school readiness of children with special needs using a regression discontinuity design. Participation in the pre-K program was associated with significant gains for children with special needs in early literacy scores, but not in math scores. These…

The growth in public preschool education is based on research that shows high-quality prekindergarten has a positive effect on children's chances of succeeding in school and life. Beneath the surface of this growth, however, lies a troubling lag in preschool education participation by the nation's largest, fastest growing and yet most…