Prior HQIM mathematics impact studies show mixed results, with positive effects for Desmos and some Illustrative Mathematics contexts but no significant grade-6 difference¶

Claim · All claims
Evidence · 1 study (2 entries) · design r1 · q2
Currency · newest study 2026 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? A middle-grades Desmos study found a positive effect on math scores using a basic usage measure, while a quasi-experimental study found no statistically significant grade-6 achievement difference for Illustrative Mathematics districts versus business-as-usual districts. → Perry 2026

Evidence¶

Perry 2026¶

Perry, R., Nucci, D., Walters, K., McKinney, D., Nielsen, S., & Hannan, M. (2026). Measuring what matters: Considerations for measuring the implementation of high-quality instructional materials in mathematics. WestEd. https://eric.ed.gov/?id=ED681340

q2 · i? · design · r1

The report's introduction reviews prior HQIM efficacy studies, reporting that the Desmos study "found a positive effect on middle grade math scores" with a basic usage measure. No effect size is printed.

"A study of Desmos at the middle grades (McKinney et al., 2023) found a positive effect on middle grade math scores using just a basic measure of implementation usage."

Perry 2026 (2)¶

Perry, R., Nucci, D., Walters, K., McKinney, D., Nielsen, S., & Hannan, M. (2026). Measuring what matters: Considerations for measuring the implementation of high-quality instructional materials in mathematics. WestEd. https://eric.ed.gov/?id=ED681340

q2 · i? · design · r1

The report cites a quasi-experimental study using HQIM adoption data (DePiper et al., 2023) that "found no statistically significant differences" in grade-6 mean achievement. Equivalence was not tested; no effect size is printed.

"found no statistically significant differences on mean student mathematics achievement in grade 6 for Illustrative Mathematics districts compared to similar districts using business-as-usual mathematics curricula"

Discussion¶

Related Claims¶

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