Claims

The entrance-age achievement association appears in the first months of kindergarten and declines sharply in subsequent years

Claim · All claims
Evidence · 1 study · associational r? · q3
Currency · newest study 2009 · 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? The association between achievement test scores and entrance age appears during the first months of kindergarten and declines sharply in subsequent years. → Todd E. Elder and Darren H. Lubotsky 2009

Evidence

Todd E. Elder and Darren H. Lubotsky 2009

Todd E. Elder and Darren H. Lubotsky. (2009). Kindergarten Entrance Age and Children’s Achievement: Impacts of State Policies, Family Background, and Peers. Journal of Human Resources. https://doi.org/10.3368/jhr.44.3.641

q3 · i? · associational · r?

The article reports the developmental trajectory of the entrance-age association: it “appears during the first months of kindergarten” and then “declines sharply in subsequent years.” This timing pattern is presented as evidence against an in-school learning-ability advantage. No effect size is printed in the available text.

"The association between achievement test scores and entrance age appears during the first months of kindergarten, declines sharply in subsequent years, and is especially pronounced among children from upper-income families, a group likely to have accumulated the most skills prior to school entry."

Discussion

Page metadata
Field Value
type claim
id entrance-age-gap-declines-after-kindergarten-entry
title The entrance-age achievement association appears in the first months of kindergarten and declines sharply in subsequent years
description The entrance-age achievement association appears in the first months of kindergarten and declines sharply in subsequent years
status review
evidence_strength moderate
newest_evidence 2009
generated by process:wiki-ingest on 2026-10-15
trust unverified — no one has confirmed this page's content
sources 1 — todd-e-elder-and-darren-h-lubotsky-2009

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