Claims

Low-performing students were more affected by closures in mathematics while high-performing students were more affected in reading, and low-performing students benefited more from systematic online learning

Claim · All claims
Evidence · 1 study (2 entries) · quant-synthesis r2 · q3
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.

q3 i? Low-performing students were more affected by school closures in mathematics, while high-performing students were more affected in reading (Schult et al., 2021). → Hammerstein Svenja 2021 q3 i? Low-performing students benefited more from systematic online-learning methods than high-performing students (Clark et al., 2020; Spitzer and Musslick, 2021). → Hammerstein Svenja 2021 (2)

Evidence

Hammerstein Svenja 2021

Hammerstein Svenja, König Christoph, Dreisörner Thomas, Frey Andreas. (2021). Effects of COVID-19-Related School Closures on Student Achievement-A Systematic Review. Frontiers in Psychology. https://doi.org/10.3389/fpsyg.2021.746289

q3 · i? · quant-synthesis · r2

Review synthesis of differential effects, reporting the subject-by-achievement-level contrast from the German change-score study (Schult et al., ~80,000 secondary students). Table 1 notes larger effects on reading in high-performing students and on mathematics in low-performing students; no effect size is printed for this contrast.

"Third, low-performing students were more affected by COVID-19-related school closures in mathematics, while high-performing students were more affected by COVID-19-related school closures in reading (Schult et al., 2021)."

Hammerstein Svenja 2021 (2)

Hammerstein Svenja, König Christoph, Dreisörner Thomas, Frey Andreas. (2021). Effects of COVID-19-Related School Closures on Student Achievement-A Systematic Review. Frontiers in Psychology. https://doi.org/10.3389/fpsyg.2021.746289

q3 · i? · quant-synthesis · r2

Review synthesis citing the Chinese DiD study (Clark et al.) and the German online mathematics software study (Spitzer and Musslick, >2,500 students, −2.43% error rate). The review explains this by low-performing students being less distracted at home and online programs adapting assignments individually; no effect size is printed for this differential.

"Finally, low-performing students benefited more from systematic online-learning methods (Clark et al., 2020; Spitzer and Musslick, 2021)."

Discussion

Page metadata
Field Value
type claim
id covid-closures-achieving-level-differential-effects
title Low-performing students were more affected by closures in mathematics while high-performing students were more affected in reading, and low-performing students benefited more from systematic online learning
description Low-performing students were more affected by closures in mathematics while high-performing students were more affected in reading, and low-performing students benefited more from systematic online learning
status review
evidence_strength moderate
newest_evidence 2021
generated by process:wiki-ingest on 2026-10-15
trust unverified — no one has confirmed this page's content
sources 2 — hammerstein-svenja-2021, hammerstein-svenja-2021-2

Frontmatter is the page's machine-readable record — see the Schema & Guide.