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Browse and Download Reading A-Z Research

Reading A-Z is famous with educators for our extensive collection of leveled books and resources. These tools enhance instruction and build literacy skills. Explore our studies on the efficacy of these resources.

ESSA — Proven Results


McREL Study Raz-Plus

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McREL Study Examines Effects of Raz-Plus on Reading Achievement and Motivation

Read about McREL International's rigorous study of the effects of Raz-Plus on reading skills and motivation to read.

Raz-Plus and Reading Achievement in Students in...

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Independent Study: Raz-Plus and Reading Achievement in Students in Grades 3–5

This independent study in a large urban school district compared reading abilities in two student groups: one with Raz-Plus, one without.

Tutoring Programs and Reading Achievement

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Tutoring Programs and Reading Achievement in Second-Grade Students

Read about second-grade students in rural schools who used Raz-Plus as part of their tutoring in this study.

Case Studies


Addressing the Summer Slide With Raz-Kids and...

Addressing the “Summer Slide” With Raz-Kids and Reading A-Z

This study asks whether at-risk students using Raz-Kids and Reading A-Z can overcome the “summer slide.”

Reading A-Z and Raz-Kids as Part of a...

Reading A-Z and Raz-Kids as Part of a District-Wide Literacy Plan

What happens when a large urban school district implements Reading A-Z and Raz-Kids for supplemental and intervention literacy instruction?

Raz-Plus and Early Reading Skills in Kindergarten...

Raz-Plus and Early Reading Skills in Kindergarten Students

By including students with low pre-literacy skills, this study informs the field of potential prevention for future reading difficulties.

Reading A-Z and Literacy Skills in Title I School...

Reading A-Z and Literacy Skills in Title I School With ELL Majority

This case study addresses an implementation of Reading A-Z in a Title I school where two-thirds of students were English language learners.

Raz-Plus and Reading Proficiency in a Rural...

Raz-Plus and Reading Proficiency in a Rural Elementary School

Examining Raz-Plus effects on economically disadvantaged students, this study compared reading proficiency in cohorts four years apart.

Research Base


Teaching the Foundations: Best Practices for...

Teaching the Foundations: Best Practices for Emergent Readers

This white paper addresses research on foundational literacy areas, including key areas identified as critical for emergent readers.

Reading to Learn: Going Beyond the Foundations

Reading to Learn: Going Beyond the Foundations

To help students learn from complex informational text, the focus of instruction shifts toward comprehension and analysis of text.

English Language Learning: Speaking, Listening,...

English Language Learning: Speaking, Listening, Reading, and Writing in English

Raz-Plus ELL Edition helps English language learners develop speaking, listening, reading, writing, and grammar skills in English.

Exceptional Learners: RtI, Special Education, and...

Exceptional Learners: RtI, Special Education, and Gifted Students

Discussing research on giftedness, RtI, and special education, this paper also describes best practices for teaching exceptional students.

21st Century Skills: Preparing Students for...

21st Century Skills: Preparing Students for Future Success

Learning A-Z resources promote critical thinking and teamwork, also addressing the crucial 21st century skills described in this white paper.

More Studies and Publications


Reading Motivation in English Language Learners...

Reading Motivation in English Language Learners Using Raz-Plus

Find out whether Raz-Plus affected motivation to read in these fifth-grade students learning English.

Reading Growth in Elementary School Students

Reading Growth in Elementary School Students Following Tutoring Programs

Elementary school students with learning disabilities in rural communities worked to improve reading fluency.