Median-age comparison of two cities shows children in City C substantially older per grade than in City F (first grade nearly six months, fourth grade over eight months)¶
Claim · All claims
Evidence · 1 study · associationalr1·q2
Currency · newest study 1920 · 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.
q2 i? Children in the first grade of City C are nearly six months older and children in grade 4 over eight months older than their counterparts in City F, per the median-age analysis. → Pressey 1920
Evidence¶
Pressey 1920¶
Pressey, S. L. (1920). Two Important Points with Regard to Age-Grade Tables. The Journal of Educational Psychology. https://eric.ed.gov/?q=Two+Important+Points+with+Regard+to+Age-Grade+Tables
q2 · i? · associational · r1
Descriptive analysis of age-grade census tables (Table I) for City C (1320 pupils) and City F (1543 pupils), both censused in March, summarized by median age per grade. The printed median differences include .55, .56, .49, .65 year for early grades.
"when it is realized that the children in the first grade of City C are nearly six months older than the same children in City F and that the children in grade 4 are over eight months older than those in City F, then things begin to look serious."
Discussion¶
Related Claims¶
- Percentile analysis shows the range of ages within a grade is much greater in City C, nearly twice as great as City F for grades two and three — related
- Uneven school coverage of ages makes general age norms for achievement tests practically impossible to establish — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
median-age-per-grade-two-city-comparison |
title |
Median-age comparison of two cities shows children in City C substantially older per grade than in City F (first grade nearly six months, fourth grade over eight months) |
description |
Median-age comparison of two cities shows children in City C substantially older per grade than in City F (first grade nearly six months, fourth grade over eight months) |
status |
review |
evidence_strength |
weak |
newest_evidence |
1920 |
generated |
by process:wiki-ingest on 2026-10-25 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — pressey-1920 |
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