i-Ready Diagnostic received positive reviews on the key criteria of Reliability, Validity, and Classification Accuracy in Grades K–8 Mathematics and Reading for NCII's Academic Screener Tool Chart.
LEARN MOREOverview | Stretch Growth | Foundational Research | Impact and Efficacy | Linking Studies | Unfinished Learning
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.
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:
Research support for the impact of achieving Stretch Growth on below-grade level learners
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.
This research examines instructional practices and Stretch Growth attainment.
This research supports the use of i-Ready Personalized Instruction as a strategy to support achievement of student Stretch Growth goals.
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.
This research base provides an overview of Magnetic Reading Foundations for Grades K–2’s foundational research and pedagogical approach.
The research base linked below provides an overview of Magnetic Reading’s foundational research and pedagogical approach.
Meet the program authors, technical advisors, and efficacy advisors who help build and improve our products.
The studies linked below provide an overview of our foundational research base and pedagogical approach.
i-Ready Diagnostic received high ratings from the National Center on Intensive Intervention (NCII).
Learn how our programs were built to align with the core principles of the Science of Reading.
This research base provides an overview of i-Ready Classroom Mathematics' fundamental design principals and foundational research.
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.
Research support for i‑Ready and ESSA evidence
Research support for Ready Mathematics and ESSA evidence
Research support for Ready supplemental programs and ESSA evidence
Evidence supporting our Magnetic Reading Foundations (K–2) and Magnetic Reading (3–5) programs (both reviewed by Evidence for ESSA)
The i‑Ready Diagnostic is highly correlated with leading national and state summative tests.
i-Ready Diagnostic: Correlation Study with Alabama’s Comprehensive Assessment Program (ACAP)
i-Ready Diagnostic: Linking Study with Alaska System of Academic Readiness (AK STAR)
i-Ready Diagnostic: Linking Study with Arizona’s Academic Standards Assessment (AASA)
i-Ready Diagnostic: Linking Study with the California Assessment of Student Performance and Progress (CAASPP)
i-Ready Diagnostic: Linking Study with Colorado Measures of Academic Success (CMAS)
i-Ready Diagnostic: Linking Study with Smarter Balanced Assessment (SBA) in Connecticut
i-Ready Diagnostic: Correlation Study with Florida Assessment of Student Thinking Progress Monitoring 1 and 2 (FAST PM1 and PM2)
i‑Ready Diagnostic: Correlation Study with Georgia Milestones Assessment System (GMAS)
i-Ready Diagnostic: Linking Study with Illinois Assessment of Readiness (IAR)
i‑Ready Diagnostic: Linking Study with Indiana Learning Evaluation Assessment Readiness Network (ILEARN)
i-Ready Diagnostic: Linking Study with Iowa Statewide Assessment of Student Progress (ISASP)
i‑Ready Diagnostic: Linking Study with Kentucky Summative Assessment (KSA)
i-Ready Diagnostic: Linking Study with the Louisiana Educational Assessment Program (LEAP 2025)
i-Ready Diagnostic: Linking Study with Maryland Comprehensive Assessment Program (MCAP)
i-Ready Diagnostic: Linking Study with the Massachusetts Comprehensive Assessment System (MCAS)
i-Ready Diagnostic: Linking Study with Michigan Student Test of Educational Progress (M-STEP) and the Preliminary SAT (PSAT 8/9)
i‑Ready Diagnostic: Linking Study with Mississippi Academic Assessment Program (MAAP)
i-Ready Diagnostic: Linking Study with New Jersey Student Learning Assessments (NJSLA)
i‑Ready Diagnostic: Linking Study with New York State Testing Program (NYSTP)
i-Ready Diagnostic: Correlation Study with the North Carolina End-of-Grade Tests (NC EOG)
i-Ready Diagnostic: Linking Study with the Partnership for Assessment of Readiness for College and Careers (PARCC) Test
i-Ready Diagnostic: Linking Study with Pennsylvania System of School Assessment (PSSA)
i-Ready Diagnostic: Correlation Study with Rhode Island Comprehensive Assessment System (RICAS)
i-Ready Diagnostic: Linking Study with South Carolina College- and Career-Ready Assessments (SC READY)
i-Ready Diagnostic: Correlation Study with State of Texas Assessments of Academic Readiness (STAAR)
i-Ready Diagnostic: Linking Study with the Virginia Standards of Learning (SOL)
i-Ready Diagnostic: Linking Study with the West Virginia General Summative Assessment (WVGSA)
