Skip to Content
Visible Learning™
Visible Learning MetaX
Version 1.4 – Updated February 2026

Summer school

Overview

  • Influence: Summer school
  • Domain: School
  • Sub-Domain: Types of schools
  • Potential to Accelerate Student Achievement: Likely to have a small positive impact
  • Influence Definition: Remedial summer school programs for students who have not made adequate progress toward meeting grade-level expectations

Evidence

  • Number of meta-analyses: 6
  • Number of studies: 183
  • Number of students: 43,977
  • Number of effects: 809
  • Weighted mean effect size: 0.17
  • Robustness index: 3

Meta-Analyses

Meta-Analyses
Journal Title Author Article Name Year Published Variable Number of Studies Number of Students Number of Effects Effect Size
Monographs of the Society for Research in Child Development Cooper, Charlton, Valentine, Muhlenbruck, & Borman Making the Most of Summer School: A Meta-Analytic and Narrative Review 2000 Remedial summer programs 41 26,500 385 0.28
Monographs of the Society for Research in Child Development Cooper, Charlton, Valentine, Muhlenbruck, & Borman Making the Most of Summer School: A Meta-Analytic and Narrative Review 2000 Acceleration summer programs 7 2,200 60 0.23
Dissertation Kim A meta-analysis of academic summer programs 2002 Academic summer programs 57 NA 155 0.17
Mid-Continent Research for Education and Learning Lauer, Akiba, Wilkerson, Apthorp, Snow, & Martin-Glenn The effectiveness of out-of-school-time strategies in assisting low-achieving students in reading and mathematics: A research synthesis. 2004 Summer school programs on reading and math 22 15,277 26 0.07
Conference paper Xie, Neitzel, Cheung, & Slavin The effects of voluntary summer programs on K-12 students' reading and mathematics achievement: A meta-analysis. 2022 Summer programs on reading & math 19 NA 19 0.23
Conference paper Lynch, An, & Mancenido The Impact of Summer Learning Programs on Low-Income Children's Mathematics Achievement: A Meta-Analysis. 2021 Summer programs on math 37 NA 164 0.09
TOTAL/AVERAGE 183 43,977 809 0.18
Back to top