The effects of universal pre-K on cognitive development
William T Gormley1, Ted Gayer, Deborah Phillips
1Public Policy InstituteGeorgetown University, Washington, DC 20007, USA. gormleyw@georgetown.edu
Developmental Psychology
|December 15, 2005
Summary
Oklahoma's universal pre-kindergarten (pre-K) program significantly boosts school readiness. Children participating in the program showed improved scores in literacy and math, benefiting diverse student populations.
Area of Science:
- Early Childhood Education
- Developmental Psychology
- Educational Policy
Background:
- Oklahoma implemented a universal pre-kindergarten (pre-K) program.
- Assessing the impact of early education on school readiness is crucial.
Purpose of the Study:
- To evaluate the effectiveness of Oklahoma's universal pre-K program.
- To measure the impact of pre-K on children's academic achievement.
Main Methods:
- A regression-discontinuity design was employed, comparing children just above and below the pre-K eligibility cutoff.
- The study included 1,567 pre-K children and 1,461 kindergarteners who had completed pre-K.
- Woodcock-Johnson Achievement test scores were used to assess academic impact.
Main Results:
- Significant positive impacts were found on Letter-Word Identification (3.00 points), Spelling (1.86 points), and Applied Problems (1.94 points).
- Benefits were observed across diverse racial/ethnic groups (Hispanic, Black, White, Native American) and income levels (school lunch eligibility).
Conclusions:
- Oklahoma's universal pre-K program effectively enhances school readiness for a wide range of children.
- The findings support the value of universal access to high-quality pre-K education.


