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Research & Efficacy

Proven to Help Students Succeed

Overview   |   Stretch Growth  |  Foundational Research   |   Impact and Efficacy   |   Linking Studies    |   Unfinished Learning


Research and Efficacy

Our assessment and instruction programs are backed by the industry’s most practical and applicable research. Every program we provide starts with an extensive research base and is followed by a continuous cycle of research, review, and improvement. The end result is a suite of programs proven to help your students succeed.

Stretch Growth: Research-Backed Recovery Metric

Developed years before the pandemic to provide an aspirational or “stretch” growth goal for students at any level, Stretch Growth is a novel approach to measuring student progress to proficiency and beyond. We have built a growing body of evidence that shares context on Stretch Growth goal setting on students and their learning over time.

Read our technical reports on Stretch Growth below:

Variation in i-Ready Growth research cover.

Variation in i-Ready Growth: Is Typical Growth Enough for Students Who Have Fallen Behind?

Research support for the impact of achieving Stretch Growth on below-grade level learners

READ THE RESEARCH

i-Ready Stretch Growth® in the Pandemic Context research cover.

i-Ready Stretch Growth in the Pandemic Context

This research report provides new validity evidence for i-Ready's Stretch Growth targets using a sample of students who tested after the onset of the COVID-19 pandemic.

READ THE RESEARCH

Variation in Attainment of i-Ready Stretch Growth® in Reading and Mathematics research cover.

Variation in Attainment of i-Ready Stretch Growth in Reading and Mathematics: What Can We Learn from Students’ Usage of i-Ready Personalized Instruction?

This research examines instructional practices and Stretch Growth attainment.

READ THE RESEARCH

Foundational Research

Our assessment and instructional solutions are grounded in research to deliver rigorous instruction and comprehensive support to help students at all levels, from all backgrounds, achieve their greatest possible gains.

Magnetic Reading Foundations Research Base Cover.

The Research Base: Magnetic Reading Foundations Grades K–2

This research base provides an overview of Magnetic Reading Foundations for Grades K–2’s foundational research and pedagogical approach.

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Magnetic Reading Research Base cover.

The Research Base: Magnetic Reading Grades 3–5

The research base linked below provides an overview of Magnetic Reading’s foundational research and pedagogical approach.

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Photos of i-Ready authors and advisors.

The Experts behind i-Ready and Ready

Meet the program authors, technical advisors, and efficacy advisors who help build and improve our products.

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Executive summaries about i-Ready.

The Research Base: i-Ready Personalized Instruction

The Executive Summaries linked below provide an overview of our foundational research base and pedagogical approach.

MATHEMATICS | READING

Student on laptop with NCII logo.

High Ratings from NCII

i-Ready Diagnostic received high ratings from the National Center on Intensive Intervention (NCII).

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Educator helping a student.

Putting the Science of Reading to Work

Learn how our programs were built to align with the core principles of the Science of Reading.

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Impact and Efficacy

i‑Ready and Ready are backed by timely research conducted in diverse educational settings. This research meets the criteria for “evidence-based” as defined by the Every Student Succeeds Act (ESSA), qualifying these programs for Elementary and Secondary School Emergency Relief (ESSER) and School Improvement funding.

A student using a computer.

i‑Ready Efficacy: Research on i-Ready’s Impact

Research support for i‑Ready and ESSA evidence

READ THE RESEARCH

Student talking with teacher.

Research on Program Impact of Ready Mathematics Blended Core Curriculum

Research support for Ready Mathematics and ESSA evidence

READ THE RESEARCH

Students and a teacher reading from books.

Ready Efficacy: Research on Ready’s Impact

Research support for Ready supplemental programs and ESSA evidence

READ THE RESEARCH

Research on the impact of Magnetic Reading on Grades 3–5 in Iowa.

Impact of Magnetic Reading on Student Reading Achievement

This research report examines the impact of Magnetic Reading on student achievement in Grades 3–5.

READ THE RESEARCH

Linking Studies

The i‑Ready Diagnostic is highly correlated with leading national and state summative tests.

Alabama

i-Ready Diagnostic: Correlation Study with Alabama’s Comprehensive Assessment Program (ACAP)

READ THE RESEARCH

Alaska

i-Ready Diagnostic: Linking Study with Alaska System of Academic Readiness (AK STAR)

READ THE RESEARCH

Arizona

i-Ready Diagnostic: Linking Study with Arizona’s Academic Standards Assessment (AASA)

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California

i-Ready Diagnostic: Linking Study with the California Assessment of Student Performance and Progress (CAASPP)

READ THE RESEARCH

Colorado

i-Ready Diagnostic: Linking Study with Colorado Measures of Academic Success (CMAS)

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Connecticut

i-Ready Diagnostic: Linking Study with Smarter Balanced Assessment (SBA) in Connecticut

READ THE RESEARCH

Florida

i-Ready Diagnostic: Correlation Study with Florida Assessment of Student Thinking Progress Monitoring 1 and 2 (FAST PM1 and PM2)

READ THE RESEARCH

Georgia

i‑Ready Diagnostic: Correlation Study with Georgia Milestones Assessment System (GMAS)

READ THE RESEARCH

Illinois

i-Ready Diagnostic: Linking Study with Illinois Assessment of Readiness (IAR)

READ THE RESEARCH

Indiana

i‑Ready Diagnostic: Linking Study with Indiana Learning Evaluation Assessment Readiness Network (ILEARN)

READ THE RESEARCH

Kentucky

i‑Ready Diagnostic: Linking Study with Kentucky Summative Assessment (KSA)

READ THE RESEARCH

Louisiana

i-Ready Diagnostic: Linking Study with the Louisiana Educational Assessment Program (LEAP 2025)

READ THE RESEARCH

Maryland

i-Ready Diagnostic: Linking Study with Maryland Comprehensive Assessment Program (MCAP)

READ THE RESEARCH

Massachusetts

i-Ready Diagnostic: Linking Study with the Massachusetts Comprehensive Assessment System (MCAS)

READ THE RESEARCH

Michigan

i‑Ready Diagnostic: Linking Study with Michigan Student Test of Educational Progress (M‑STEP)

READ THE RESEARCH

Mississippi

i‑Ready Diagnostic: Linking Study with Mississippi Academic Assessment Program (MAAP)

READ THE RESEARCH

Missouri

i-Ready Diagnostic: Linking Study with Missouri Assessment Program (MAP)

READ THE RESEARCH

New Jersey

i-Ready Diagnostic: Linking Study with New Jersey Student Learning Assessments (NJSLA)

READ THE RESEARCH

New York

i‑Ready Diagnostic: Linking Study with New York State Testing Program (NYSTP)

READ THE RESEARCH

North Carolina

i-Ready Diagnostic: Correlation Study with the North Carolina End-of-Grade Tests (NC EOG)

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Ohio

i‑Ready Diagnostic: Linking Study with Ohio’s State Tests (OST)

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PARCC

i-Ready Diagnostic: Linking Study with the Partnership for Assessment of Readiness for College and Careers (PARCC) Test

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Pennsylvania

i-Ready Diagnostic: Linking Study with Pennsylvania System of School Assessment (PSSA)

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Rhode Island

i-Ready Diagnostic: Correlation Study with Rhode Island Comprehensive Assessment System (RICAS)

READ THE RESEARCH

SBA

i-Ready Diagnostic: Linking Study with the Smarter Balanced Assessment (SBA)

READ THE RESEARCH

Texas

i-Ready Diagnostic: Correlation Study with State of Texas Assessments of Academic Readiness (STAAR)

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Virginia

i-Ready Diagnostic: Linking Study with the Virginia Standards of Learning (SOL)

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Wisconsin

i-Ready Diagnostic: Linking Study with the Wisconsin Forward Exam

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West Virginia

i-Ready Diagnostic: Linking Study with the West Virginia General Summative Assessment (WVGSA)

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Research on Unfinished Learning 

Learn about its impact and where to focus your efforts.

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