Impact of Pre-Kindergarten
Posted by Brookings Institution on May 15, 2017
The Current State of Scientific Knowledge on Pre-Kindergarten Effects
A Pre-Kindergarten Task Force of interdisciplinary scientists reviewed the evidence on the impact of state-funded
pre-kindergarten programs. Members included: Deborah A. Phillips of Georgetown University, Mark W. Lipsey of
Vanderbilt University, Kenneth A. Dodge of Duke University, Ron Haskins of the Brookings Institution, Daphna Bassok of the University of Virginia, Margaret R. Burchinal of the University of North Carolina at Chapel Hill, Greg J. Duncan of the University of California-Irvine, Mark Dynarski of the Brookings Institution, Katherine A. Magnuson
of the University of Wisconsin-Madison, and Christina Weiland of the University of Michigan
The Task Force reached consensus on the following findings, conclusions, and recommendation:
- Studies of different groups of preschoolers often find greater improvement in learning at the end of the pre-k year for economically disadvantaged children and dual language learners than for more advantaged and English-proficient children.
- Pre-k programs are not all equally effective. Several effectiveness factors may be at work in the most successful programs. One such factor supporting early learning is a well implemented, evidence-based curriculum. Coaching for teachers, as well as efforts to promote orderly but active classrooms, may also be helpful.
- Children’s early learning trajectories depend on the quality of their learning experiences not only before and during their pre-k year, but also following the pre-k year. Classroom experiences early in elementary school can serve as charging stations for sustaining and amplifying pre-k learning gains. One good bet for powering up later learning is elementary school classrooms that provide individualization and differentiation in instructional content and strategies.
- Convincing evidence shows that children attending a diverse array of state and school district pre-k programs are more ready for school at the end of their pre-k year than children who do not attend pre-k. Improvements in academic areas such as literacy and numeracy are most common; the smaller number of studies of social-emotional and self-regulatory development generally show more modest improvements in those areas.
- Convincing evidence on the longer-term impacts of scaled-up pre-k programs on academic outcomes and school progress is sparse, precluding broad conclusions. The evidence that does exist often shows that pre-k-induced improvements in learning are detectable during elementary school, but studies also reveal null or negative longer-term impacts for some programs.
- States have displayed considerable ingenuity in designing and implementing their pre-k programs. Ongoing innovation and evaluation are needed during and after pre-k to ensure continued improvement in creating and sustaining children’s learning gains.
- Research-practice partnerships are a promising way of achieving this goal. These kinds of efforts are needed to generate more complete and reliable evidence on effectiveness factors in pre-k and elementary school that generate long-run impacts.
- In conclusion, the scientific rationale, the uniformly positive evidence of impact on kindergarten readiness,
and the nascent body of ongoing inquiry about long-term impacts lead us to conclude that continued implementation of scaled-up pre-k programs is in order as long as the implementation is accompanied by rigorous evaluation of impact.
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