Classworks has been accepted into Baltimore City's ESSA Evidence Catalog as Tier 2: Moderate Evidence: which means it is supported by one or more well-designed and well-implemented quasi-experimental studies.

Classworks Universal Screeners have been validated by the National Center on Intensive Intervention (NCII), and they received the highest ratings for reliability and validity.

A peer review of research conducted by Johns Hopkins University. This article reviews research on the achievement outcomes of computer-assisted instruction to improve elementary mathematics.

The purpose of this study was to gather data related to the impact of Classworks on first-grade students across districts that use Star Early Literacy assessments. Classworks students experienced tremendous success by scoring more than 27 points compared with their peers.