Effect sizes for within-grade reading and math growth declined as students progressed from Grade 1 to Grade 5¶
Claim · All claims
Evidence · 1 study · associationalr2·q3·i3large
Currency · newest study 2020 · 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 i3 Reading growth effect sizes fell from g = 1.37 in Grade 1 to g = 0.50 in Grade 5, and math growth fell from g = 1.93 to g = 0.73. → Scammacca Nancy 2020
Evidence¶
Scammacca Nancy 2020¶
Scammacca Nancy, Fall Anna-Mária, Capin Philip, Roberts Greg, Swanson Elizabeth (2020). Examining Factors Affecting Reading and Math Growth and Achievement Gaps in Grades 1–5: A Cohort-Sequential Longitudinal Approach. Journal of Educational Psychology. https://doi.org/10.1037/edu0000400
q3 · i3 · associational · r2
Hedges's g effect sizes computed from raw data for growth within each grade across cohorts. The article also reports "more growth occurred from the start of the year to mid-year than from mid-year to end-of-year time points, particularly in math."
"The effect size for reading growth declined from g = 1.37 in Grade 1 to g = 0.50 in Grade 5. In math, growth declined from g = 1.93 to g = 0.73."
Discussion¶
Related Claims¶
- Pandemic-period gains from fall 2019 to fall 2021 fell short of pre-pandemic growth norms — related
- In almost all grades, most students made some learning gains in both reading and math since the COVID-19 pandemic started — related
- Students showed lower math growth in fall 2020 across grades 3-8 relative to peers in the previous, more typical year — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
growth-effect-sizes-decline-grades-1-5 |
title |
Effect sizes for within-grade reading and math growth declined as students progressed from Grade 1 to Grade 5 |
description |
Effect sizes for within-grade reading and math growth declined as students progressed from Grade 1 to Grade 5 |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2020 |
generated |
by process:wiki-ingest on 2026-10-24 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — scammacca-nancy-2020 |
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