Curriculum Associates analyzed data from students in Grades K–5 who took the i-Ready Diagnostic during the 2020–2021 school year. This study also examined differences among historically marginalized student groups, including students of color, economically disadvantaged students, English learners, and students with disabilities. In both reading and mathematics and across all grade levels, students using i-Ready with fidelity (i.e., a minimum of 30–49 minutes per week for at least 18 weeks) and received an overall Lesson Quiz pass rate of 70% scored significantly higher on the spring i-Ready Diagnostic than their counterparts who did not use i-Ready with fidelity. The results of this study suggest i-Ready can be an effective intervention for historically marginalized student groups.
