School Start Time, Sleep, GPA: Replication and Six-Year Impact Study (Poster 22)

• In Event: AERA Poster Session Thursday 1:45 p.m.
  In Poster Session: Scaling Educational Change: Strategies for Impact Across Levels

Abstract

Responding to American Academy of Pediatrics recommendations, a growing number of school districts nationwide have shifted school start times (STTs) from early morning to later hours. In this replication and six-year follow-up study, we examined data from fourteen school districts—seven that transitioned to later STTs and seven that maintained early STTs. Utilizing data from the Minnesota Student Survey (2016, 2019, and 2022), hierarchical linear models were employed on a sample of 67,968 students in grades 5, 8, 9, and 11. Results were mixed, indicating a positive association between later STTs and both increased grade point averages and higher rates of students achieving recommended sleep duration in the six-year follow-up analysis, but not in the replication analysis.

Authors

• Julio Caesar, Bloomington Public Schools

• Rik Lamm, Bloomington Public Schools

• Michael C. Rodriguez, University of Minnesota