Claims

Students on the four-day school week have lower English language arts and math test scores over time than peers on five-day schedules

Claim · All claims
Evidence · 1 study · associational r2 · q2
Currency · newest study 2021 · 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.

q2 i? A comparison of English language arts and math test scores showed that students on the 4dsw have lower scores, over time, when compared with peers on a five-day schedule. → M. Rebecca Kilburn 2021

Evidence

M. Rebecca Kilburn 2021

M. Rebecca Kilburn, Andrea Phillips, Celia Gomez, Louis Mariano, Christopher Doss, Wendy Troxel, Emily Morton, Kevin Estes. (2021). Does four equal five? Implementation and outcomes of the four-day school week. NWEA Research report. https://www.nwea.org/research/publication/does-four-equal-five-implementation-and-outcomes-of-the-four-day-school-week/ doi:10.7249/rr-a373-1

q2 · i? · associational · r2

Quantitative comparison of ELA and math test scores between students on 4dsw and 5dsw schedules in the multi-state study. The report states "students on the 4dsw have lower scores, over time, when compared with peers on a five-day schedule."

"However, a comparison of English language arts and math test scores showed that students on the 4dsw have lower scores, over time, when compared with peers on a five-day schedule."

Discussion

Page metadata
Field Value
type claim
id four-day-week-lower-ela-math-scores
title Students on the four-day school week have lower English language arts and math test scores over time than peers on five-day schedules
description Students on the four-day school week have lower English language arts and math test scores over time than peers on five-day schedules
status review
evidence_strength moderate
newest_evidence 2021
generated by process:wiki-ingest on 2026-10-08
trust unverified — no one has confirmed this page's content
sources 1 — m-rebecca-kilburn-2021

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