Long-Term Effects of Oklahoma's Universal PreK Program

Oklahoma is one of three states in the nation to offer free voluntary PreKindergarten, since 1998, to all children in participating school districts.

Since 2001, researchers at the Georgetown University Center for Research on Children in the United States (CROCUS) have evaluated the effectiveness of the Tulsa Public Schools Universal PreK program.

CROCUS has produced two papers and a policy brief on the longer term effects of the Tulsa PreK program:

• The Effects of Oklahoma's Pre-Kindergarten Program on 3rd Grade Test Scores

• Do the Short-Term Effects of a Strong Preschool Program Persist? 

• Earnings Benefits of Tulsa's Pre-K Program for Different Income Groups