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Our research

mCLASS Literacy

Based on decades of leading literacy research, mCLASS® is the gold-standard assessment and instructional suite for early literacy that helps every child learn to read confidently.

Research base

Research: The importance of dual language assessment in early literacy (published in 2022)

Research: Administration and Scoring Guide (published in 2021)

Research: DIBELS 8th Edition Technical Manual (published in 2020)

Research: mCLASS Dyslexia Screening Measures Technical Manual (published in 2019)

Report: mCLASS Dyslexia Screening Measures Research (published in 2019)

Research: Burst Reading Assessment (Now mCLASS Intervention) Technical Manual (published in 2019)

Research: Five leadership practices that drive success in K–2 literacy (published in 2018)

Report: Examining the Efficacy of mCLASS Intervention (published in 2015)

Research briefs

Research brief: Reading scores rise overall; gender disparities present a complex picture. (published July 2025)

Research brief: Early literacy gains offer hope for COVID recovery, though broader literacy challenges persist nationwide (published February 2025)

Research brief: Summer instructional loss highlights the importance of quality core instruction for the youngest grades. (published October 2024)

Research brief: Different outcomes for Spanish-speaking students assessed in English and in Spanish demonstrate the importance of bilingual assessment.
(published June 2024)

Research brief: Middle-of-year data show early literacy improvements are slowing, and broader U.S. literacy rates remain a concern. (published March 2024)

Research brief: With end-of-year data showing continued academic recovery in early literacy, worries remain for third grade students.(published July 2023)

Research brief: Middle-of-year data show that academic recovery continues in early literacy, with Black and Hispanic students making the greatest gains. (published February 2023)

Research brief: Data from the beginning of the school year show that the literacy crisis in America’s schools may be worse than it was before COVID-19; but the greatest part of the crisis existed before the pandemic. (published October 2022)

Research brief: Amid academic recovery in classrooms nationwide, risks remain for youngest students with least instructional time during critical early years. (published February 2022)

Research brief: Students start to recover from COVID instructional loss. (published July 2021)

Research brief: COVID-19 means more students not learning to read. (published February 2021)

mCLASS Lectura

Research: mCLASS Lectura Guía de administración y calificación

Research: mCLASS Lectura Technical Manual

Research: mCLASS Spelling Español Technical Manual

Research: The importance of dual language assessment in early literacy

Case studies

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