Claims

The treatment effect of Everyday Mathematics varied significantly across schools (greater than two standard deviations) and districts (greater than one standard deviation) in year one

Claim · All claims
Evidence · 1 study · causal r2 · q3
Currency · newest study 2015 · not yet checked against its sources · not reviewed by a person

Subclaims

Reading the evidence codes

q is the design tier, i the impact, n the sample, and the kind with its r the rigour judged within that kind: what each code means.

This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.

q3 i? Variation in the EM treatment effect by school was significant, exceeding two standard deviations, and district variation exceeded one standard deviation. → Michael Vaden-Kiernan 2015

Evidence

Michael Vaden-Kiernan 2015

Michael Vaden-Kiernan, Geoffrey Borman, Sarah Caverly, Nance Bell, Veronica Ruiz de Castilla, and Kate Sullivan. (2015). Preliminary Findings from a Multi-Year Scale-Up Effectiveness Trial of Everyday Mathematics. SREE Spring 2015 Conference Abstract. https://eric.ed.gov/?id=ED562455

q3 · i? · causal · r2

Preliminary year-one ITT analysis of the 48-school cluster-randomized trial; Table 2 prints school-level variance 1.838 (SD 0.883) and district-level variance 1.291 (SD 1.096). The article reports significant treatment-effect heterogeneity across schools and districts.

"The results however do indicate that variation in the treatment effect by school was significant (i.e., greater than two standard deviations) and district variation was greater than one standard deviation."

Discussion

Page metadata
Field Value
status review
generated by process:wiki-ingest on 2026-11-01
trust unverified — no one has confirmed this page's content

Frontmatter is the page's machine-readable record — see the Schema & Guide.