Claims

In the calibrated simulation, a shock reducing grade 3 learning by one-third leaves the cohort a full year of learning behind the no-shock counterfactual by grade 10

Claim · All claims
Evidence · 1 study · theoretical r3 · 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? Reducing grade 3 learning gains by one-third reduces average grade 10 learning by a full year relative to the counterfactual of no shock. → Kaffenberger 2021

Evidence

Kaffenberger 2021

Kaffenberger, Michelle. (2021). Modelling the long-run learning impact of the Covid-19 learning shock: Actions to (more than) mitigate loss. International Journal of Educational Development. https://doi.org/10.1016/j.ijedudev.2020.102326

q1 · i? · theoretical · r3

Simulation using a PPF model calibrated to PISA-D countries, applying a one-third reduction to grade 3 learning and modelling trajectories through grade 10. The modelled finding is that learning is "a full year lower" in grade 10 than the no-shock counterfactual.

"When this cohort of current grade 3 students reaches grade 10, their learning on average is a full year lower than what it would have been had there been no shock"

Discussion

Page metadata
Field Value
type claim
id grade-3-one-third-shock-full-year-grade-10-loss
title In the calibrated simulation, a shock reducing grade 3 learning by one-third leaves the cohort a full year of learning behind the no-shock counterfactual by grade 10
description In the calibrated simulation, a shock reducing grade 3 learning by one-third leaves the cohort a full year of learning behind the no-shock counterfactual by grade 10
status review
evidence_strength weak
newest_evidence 2021
recheck_by 2026
generated by process:wiki-ingest on 2026-10-16
trust unverified — no one has confirmed this page's content
sources 1 — kaffenberger-2021

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