Reading Horizons partnered with LearnPlatform by Instructure to investigate the relationship between teacher implementation of Reading Horizons Discovery (RHD) and student literacy outcomes. The study involved 83 educators and 1,242 students across seven elementary schools in North Carolina during the 2022-23 school year. Researchers used mCLASS…

This technical report is an addendum to a study we initially reported on in 2014 (Wray, Lai, Saez, Alonzo, & Tindal, 2014). In response to a request for additional analyses, in particular reporting confidence intervals around the results, we re-analyzed the data from the Wray et al study. This supplementary report presents the results of the…

The "Effectiveness of Early Literacy Instruction: Summary of 20 Years of Research" study examined information about evidence-based practices that are essential for early childhood educators and policymakers as they support preschool children's language and literacy development. The study used a process modeled after the What Works…

This report summarizes Fall 2017 Texas Kindergarten Early Assessment (TX-KEA) results for Austin Independent School District (AISD) kindergarten students, examining those with or without prior AISD prekindergarten experience. Test domains summarized in the report include vocabulary, listening comprehension, blending, letter names, letter sounds,…

In this technical report, we present the results of a study to gather criterion-related evidence for Grade K-1 easyCBM® reading measures. We used correlations to examine the relation between the easyCBM® measures and other published measures with known reliability and validity evidence, including the Dynamic Indicators of Basic Early Literacy…

We report the results of an alternate form reliability and criterion validity study of kindergarten and grade 1 (N = 84-199) reading measures from the easyCBM© assessment system and Stanford Early School Achievement Test/Stanford Achievement Test, 10th edition (SESAT/SAT-­10) across 5 time points. The alternate form reliabilities ranged from…

In 2013-14, Letterland had strong implementation, with moderate to high fidelity within approximately 90% of Wake County Public School System (WCPSS) K-1 classrooms. The impact of Letterland on students' reading achievement was neutral to positive. A significantly higher percentage of WCPSS kindergarten students were at or above benchmark mid-year…

Following research on phonological awareness development, this study explores children's acquisition of blending skills using three types of stimuli: body-coda, onset-rime, and phonemes. The results demonstrated that kindergarten children consistently gained proficiency for blending body-coda stimuli prior to onset-rime stimuli and phonemes. The…

In this technical report, the authors describe the development and piloting of reading comprehension measures as part of a comprehensive progress monitoring literacy assessment system developed in 2006 for use with students in Kindergarten through fifth grade. They begin with a brief overview of the two conceptual frameworks underlying the…

In this technical report, the authors describe the development alternate forms of three types of early literacy measures as part of a comprehensive progress monitoring literacy assessment system developed in 2006 for use with students in Kindergarten through fourth grade. They begin with a brief overview of the two conceptual frameworks underlying…

This technical report presents an overview of a reading assessment used by a large school district in the Pacific Northwest. It provides sufficient background information to enable those unfamiliar with the assessment to understand the various subtests that comprise it as well as its development and application in the district for making…