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Meta-analysis Studies on Instruction and Schools


The synthesized research findings presented in this document are based in part on an earlier study (Marzano, 1998), which summarizes findings from more than 100 studies involving 4000+ control groups. Since that document was published, McREL researchers have analyzed additional research findings from selected research on instructional strategies that could be used by teachers in K-12 classrooms. The combined results of these syntheses are presented in "What Works in Classroom Instruction."

This study identifies nine instructional categories that strongly affect student achievement:


Label Value
Subject A meta-analysis of multiple classroom instructional Strategies
Author Robert J. Marzano, Barbara B. Gaddy, & Ceri Dean
Keywords Cooperative learning, Classroom Instruction. homework, K-12
Delivery Area
  • school based
Outcome Area
  • academic performance
  • teacher practice
Participant Area
  • student
  • educator
  • school