Non-linear within-year growth has implications for extending the school year, summer learning loss, and racial/ethnic achievement gaps¶
Claim · All claims
Evidence · 1 study · associationalr?·q1
Currency · newest study 2021 · not yet checked against its sources · not reviewed by a person · recheck by 2026: 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.
q1 i? The authors state the non-linearity findings carry implications for investments in extending the school year, summer learning loss, and racial/ethnic achievement gaps. → Megan Kuhfeld 2021
Evidence¶
Megan Kuhfeld 2021¶
Megan Kuhfeld, James Soland. (2021). The learning curve: Revisiting within-year linear growth assumptions. Journal of Research on Educational Effectiveness, 14:1, 143-171. https://www.nwea.org/research/publication/35099/ doi:10.1080/19345747.2020.1839990
q1 · i? · associational · r?
Authors' interpretive statement in the abstract: implications of the non-linear growth results for "extending the school year, summer learning loss, and racial/ethnic achievement gaps" are discussed in the article. No evidence or effect size for the implications is printed in the available text.
"Implications for investments in extending the school year, summer learning loss, and racial/ethnic achievement gaps are discussed."
Discussion¶
Related Claims¶
- Assuming linear within-year achievement growth is often not justified, particularly in reading — related
- Black–White achievement gaps widen during the school year in both rural and nonrural schools — a narrower finding that bears on this claim
- The rural–nonrural achievement divergence is driven by larger summer losses for rural students — related
- Ever-ELs closed in on the national average by end of 4th grade, with Asian and White ever-ELs surpassing it in 2nd grade — related
- The seasonal analysis of racial/ethnic disparities spans kindergarten through eighth grade — related
- A seasonal analysis of roughly 2 million students examines racial/ethnic disparities in learning from kindergarten through eighth grade — related
- Black-White achievement gaps widen during school periods and shrink during summers among kindergarten through eighth-grade students — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
nonlinear-growth-implications-school-year-summer-gaps |
title |
Non-linear within-year growth has implications for extending the school year, summer learning loss, and racial/ethnic achievement gaps |
description |
Non-linear within-year growth has implications for extending the school year, summer learning loss, and racial/ethnic achievement gaps |
status |
review |
evidence_strength |
weak |
newest_evidence |
2021 |
recheck_by |
2026 |
generated |
by process:wiki-ingest on 2026-10-08 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — megan-kuhfeld-2021 |
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