Claims

Average fall 2021 math scores in Grades 3–8 were .20–.27 SD lower than same-grade peers' fall 2019 scores

Claim · All claims
Evidence · 1 study · associational r? · q3
Currency · newest study 2022 · not yet checked against its sources · not reviewed by a person · recheck by 2027: baselines and conditions change

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? Math achievement in Grades 3–8 in fall 2021 declined by .20–.27 SD relative to fall 2019 same-grade peers; the article prints this SD decline but no standardized effect-size statistic, so no magnitude code is assigned. → Megan Kuhfeld 2022

Evidence

Megan Kuhfeld 2022

Megan Kuhfeld, James Soland, Karyn Lewis. (2022). Test score patterns across three COVID-19-impacted school years. Educational Researcher. https://doi.org/10.3102/0013189X221109178

q3 · i? · associational · r?

Large-scale observational analysis of test scores from 5.4 million U.S. students in Grades 3–8 tracking pandemic achievement changes; the study reports math scores were ".20–.27 standard deviation (SD) lower" relative to fall 2019 same-grade peers, with no further effect-size statistic printed.

"Average math test scores in the fall of 2021 in Grades 3–8 were .20–.27 standard deviation (SD) lower relative to same-grade peers in the fall of 2019"

Discussion

Page metadata
Field Value
type claim
id covid-math-decline-020-027-sd-grades-3-8
title Average fall 2021 math scores in Grades 3–8 were .20–.27 SD lower than same-grade peers' fall 2019 scores
description Average fall 2021 math scores in Grades 3–8 were .20–.27 SD lower than same-grade peers' fall 2019 scores
status review
evidence_strength moderate
newest_evidence 2022
recheck_by 2027
generated by process:wiki-ingest on 2026-10-08
trust unverified — no one has confirmed this page's content
sources 1 — megan-kuhfeld-2022

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