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What Works Clearinghouse

U.S. Department of Education
Institute of Education Sciences
  
The WWC offers a range of publications that evaluate research on early childhood education interventions and instructional strategies designed for use with 3- to 5-year-old children. These products and strategies aim to develop competencies associated with school readiness, including language, literacy, math, and cognition.1
1 The topic report on this subject also includes a focus on center-based interventions designed to improve the school readiness of preschool children with developmental delays or diagnosed disabilities.
Click here to print the intervention list.
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Evidence Rating Key
Positive effects Positive Effects: strong evidence of a positive effect with no overriding contrary evidence.
No discernible effects No Discernible Effects: no affirmative evidence of effects.
Potentially positive effects Potentially Positive Effects: evidence of a positive effect with no overriding contrary evidence.
Potentially negative effects Potentially Negative Effects: evidence of a negative effect with no overriding contrary evidence.
Mixed effects Mixed Effects: evidence of inconsistent effects.
Negative Effects Negative Effects: strong evidence of a negative effect with no overriding contrary evidence.
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