Students who made the greatest school-year gains experienced the greatest summer learning loss¶

Claim · All claims
Evidence · 1 study · associational r? · q2
Currency · newest study 2019 · not yet checked against its sources · not reviewed by a person · overdue for a recheck since 2024: 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.

q2 i? The students who experienced the greatest summer loss were those who made the greatest gains during the previous school year. → Megan Kuhfeld 2019

Evidence¶

Megan Kuhfeld 2019¶

Megan Kuhfeld. (2019). Rethinking summer slide: The more you gain, the more you lose. KappanOnline. https://www.nwea.org/research/publication/rethinking-summer-slide-the-more-you-gain-the-more-you-lose/

q2 · i? · associational · r?

Observational analysis of MAP Growth data from 3.4 million students relating prior school-year gain magnitude to subsequent summer loss. The article states "the students who experienced the greatest loss were those who made the greatest gains." No effect size is printed in the available text.

"According to the data, the students who experienced the greatest loss were those who made the greatest gains during the previous school year."

Discussion¶

Learner Variables¶

Time and Continuity — outcome: instruction changes it

In math, EL groups grew more than never-ELs during academic years but lost more during summers — related
Dual language participants grew faster than nonparticipants in math during each school year in grades 2 to 5 but lost more learning during subsequent summers — a narrower finding that bears on this claim
Summer learning loss is common but not inevitable among K-12 students — related
The research program includes related work on summer learning loss and the relationship between school-year gains and summer loss — possibly the same claim (merge candidate)
NC Pre-K participants made greater gains than expected for normal developmental growth, with particular benefits for dual language learners and low-income students — related
Summer learning loss findings call into question explanations based on summer program access and school-year length — related

Page metadata

Field	Value
`type`	`claim`
`id`	`greatest-gains-greatest-summer-loss`
`title`	`Students who made the greatest school-year gains experienced the greatest summer learning loss`
`description`	`Students who made the greatest school-year gains experienced the greatest summer learning loss`
`status`	`review`
`evidence_strength`	`moderate`
`newest_evidence`	`2019`
`recheck_by`	`2024`
`generated`	by `process:wiki-ingest` on `2026-10-08`
`trust`	unverified — no one has confirmed this page's content
`sources`	1 — `megan-kuhfeld-2019`

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