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The problem
Intervention: Attendance at public preschool in the US (school-based pre-k or Head Start) compared with no preschool
Who it was tested with: Race-ethnically diverse children from low-income families in the US, followed to kindergarten (n = 907) and fourth grade (n = 595).
Experience from people who deliver programmes: stories, case studies and lessons learned. Valuable for understanding how and why, and for spotting what to test next, but not a measure of effect.
"Using propensity score methods, we predict children's social skills and emotional development in kindergarten" and again in fourth grade. This is a longitudinal design with a comparison group, so it fits the experimental tier, though it is not randomised.
Not a randomised trial, so unmeasured differences between groups may remain. Fewer children were followed up in fourth grade than in kindergarten. Details of the measures are not given in the abstract.
Across countries and designs
1 study · 1 country
