Efficacy Research

Impact of i-Ready Personalized Instruction on MCAS Scores in Middle School


  • Subject: Mathematics, Literacy
  • ESSA Level: 2 - Moderate
  • Grades: 6–8
  • Topic: Academic Achievement
  • Study Year: 2021–2022
  • Program: i-Ready Personalized Instruction for Mathematics, i-Ready Personalized Instruction for Reading

Published November 2023

This study analyzed the impact of using i-Ready Personalized Instruction according to guidance on middle school students’ scores on the Massachusetts Comprehensive Assessment System (MCAS) for English Language Arts (ELA) and for Mathematics. Students who used i-Ready Personalized Instruction scored, on average, about five points higher on the MCAS ELA or MCAS Mathematics assessment. This study was designed to meet the standards for ESSA Level 2 evidence.

Meet the Authors

Molly K. Duncan, Ph.D.


Curriculum Associates

Molly Duncan, Ph.D., is a research scientist at Curriculum Associates. She studies the efficacy of Curriculum Associates products and how they’re used in real classrooms. Previously, she worked in program evaluation at a large public school district and in university research labs focused on early reading and writing. She holds a Ph.D. in Educational Psychology from Georgia State University.

Madison A. Holzman, Ph.D.


Curriculum Associates

Madison Holzman, Ph.D., is an associate director at Curriculum Associates. She guides the research agenda for teacher-led reading research and conducts research evaluating the impact of Curriculum Associates’ programs on key student outcomes. Prior to joining Curriculum Associates, she provided assessment consultation in the higher education space and taught graduate-level research, statistics, and assessment courses. She earned a B.A. in Philosophy from Slippery Rock University, an M.Ed. in College Student Personnel Administration, and a Ph.D. in Assessment and Measurement from James Madison University.