Claims

In the first year of NLCI expansion, the attendance advantage over similar schools (3.8 percentage points) was not statistically significant

Claim · All claims
Evidence · 1 study · causal r2 · q2
Currency · newest study 2021 · not yet checked against its sources · not reviewed by a person · overdue for a recheck since 2024: local conditions change quickly

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? When only two of the four NLCI schools offered full-day pre-k in 2013-14, average pre-k attendance was 3.8 percentage points higher than in similar schools, but the difference was not statistically significant. → Ehrlich 2021

Evidence

Ehrlich 2021

Ehrlich, S.B., Allensworth, E.M., & Tansey, J. (2021). Meeting families' needs: Attendance rates in full-day vs. half-day pre-k. Chicago, IL: University of Chicago Consortium on School Research. https://consortium.uchicago.edu/publications/meeting-families-needs

q2 · i? · causal · r2

Year 1 of the NLCI propensity-matched comparison, when two of four schools had converted. The 3.8 percentage point advantage was not statistically significant; no effect size is printed, so the finding is reported as a non-significant difference without claiming equivalence.

"When two of the four NLCI schools offered full-day pre-k (2013-14), average pre-k attendance rates were higher in the NLCI schools than in similar schools by 3.8 percentage points, but the difference was not statistically significant"

Discussion

Page metadata
Field Value
type claim
id nlci-year-one-attendance-difference-not-significant
title In the first year of NLCI expansion, the attendance advantage over similar schools (3.8 percentage points) was not statistically significant
description In the first year of NLCI expansion, the attendance advantage over similar schools (3.8 percentage points) was not statistically significant
status review
evidence_strength weak
newest_evidence 2021
recheck_by 2024
generated by process:wiki-ingest on 2026-10-08
trust unverified — no one has confirmed this page's content
sources 1 — ehrlich-2021

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