Claims

Neither promotion nor retention significantly closed the achievement gap of low-achieving students close to the cutoff, and the lowest achievers deteriorated further

Claim · All claims
Evidence · 1 study (2 entries) · causal r2 · q3
Currency · newest study 2004 · 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-achieving students started school behind and fell further behind before the gate grade; the gap did not significantly close afterward for students near the cutoff. → Nagaoka 2004 q3 i? Very low-achieving retained sixth graders deteriorated in relative performance, averaging nearly one and one-quarter standard deviations below cohort reading achievement two years after retention, though no effect size for retention itself is printed. → Nagaoka 2004 (2)

Evidence

Nagaoka 2004

Nagaoka, J., & Roderick, M. (2004). Ending Social Promotion: The Effects of Retention. Consortium on Chicago School Research. https://consortium.uchicago.edu/publications/ending-social-promotion-effects-retention

q3 · i? · causal · r2

Cohort gap analysis from first grade to two years after the retention or promotion decision for three score groups shows low achievers started substantially behind and the gap widened most between first and third grade, before the policy took effect.

"Neither promotion nor retention led to a significant closing of this achievement gap after the gate grade for those low-achieving students who had test scores close to the cutoff."

Nagaoka 2004 (2)

Nagaoka, J., & Roderick, M. (2004). Ending Social Promotion: The Effects of Retention. Consortium on Chicago School Research. https://consortium.uchicago.edu/publications/ending-social-promotion-effects-retention

q3 · i? · causal · r2

Descriptive tracking of the very low-achieving group (most of whom were retained) shows deterioration in relative performance after retention, averaging "nearly one and one-quarter standard deviations below the average reading achievement of their cohort"; the report notes that without a comparison group the negative effect of retention cannot be isolated.

"Two years after retention, the average achievement of sixth graders in our very low-achieving group was nearly one and one-quarter standard deviations below the average reading achievement of their cohort."

Discussion

Page metadata
Field Value
type claim
id retention-social-promotion-no-gap-closing
title Neither promotion nor retention significantly closed the achievement gap of low-achieving students close to the cutoff, and the lowest achievers deteriorated further
description Neither promotion nor retention significantly closed the achievement gap of low-achieving students close to the cutoff, and the lowest achievers deteriorated further
status review
evidence_strength moderate
newest_evidence 2004
generated by process:wiki-ingest on 2026-10-08
trust unverified — no one has confirmed this page's content
sources 2 — nagaoka-2004, nagaoka-2004-2

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