Philadelphia charter school students' achievement gains are approximately equal to gains of students attending district-operated public schools¶
Claim · All claims
Evidence · 1 study · causalr?·q2
Currency · newest study 2008 · not yet checked against its sources · not reviewed by a person · overdue for a recheck since 2011: 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? Achievement gains of students attending Philadelphia charter schools are approximately equal to the gains of students attending district-operated public schools. → Ron Zimmer 2008
Evidence¶
Ron Zimmer 2008¶
Ron Zimmer, Suzanne Blanc, Brian Gill, Jolley Christman. (2008). Evaluating the Performance of Philadelphia's Charter Schools. Santa Monica, CA: RAND. https://www.mathematica.org/publications/evaluating-the-performance-of-philadelphias-charter-schools
q2 · i? · causal · r?
The report's summary of its Philadelphia charter school evaluation states that "Achievement gains of students attending charter schools are approximately equal to the gains of students attending district-operated public schools." No effect size or test statistic is printed in the available text.
"Achievement gains of students attending charter schools are approximately equal to the gains of students attending district-operated public schools."
Discussion¶
Related Claims¶
- Little evidence that Philadelphia charter schools help or harm achievement of students in nearby district schools — related
- The evaluation examined charter school effects by years of operation, grades served, mission, and demographics, plus student composition and turnover — related
- Average charter schools perform about the same as nearby traditional public schools, with large variation in effects — a broader claim this one bears on
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
philadelphia-charter-gains-equal-district-schools |
title |
Philadelphia charter school students' achievement gains are approximately equal to gains of students attending district-operated public schools |
description |
Philadelphia charter school students' achievement gains are approximately equal to gains of students attending district-operated public schools |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2008 |
recheck_by |
2011 |
generated |
by process:wiki-ingest on 2026-10-08 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — ron-zimmer-2008 |
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