The average improvement index for New Chance on completing school is +8 percentile points¶
Claim · All claims
Evidence · 1 study · causalr2·q3
Currency · newest study 2008 · 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? Based on the one study meeting evidence standards, the average improvement index for completing school is +8 percentile points. → What Works Clearinghouse 2008
Evidence¶
What Works Clearinghouse 2008¶
What Works Clearinghouse. (2008). New Chance: WWC Intervention Report, Dropout Prevention. U.S. Department of Education. https://ies.ed.gov/ncee/wwc/InterventionReport/336
q3 · i? · causal · r2
The WWC computes an improvement index representing the difference between the percentile rank of the average student in the intervention condition and that of the average student in the comparison condition; for New Chance it is +8 percentile points on completing school.
"Based on the one study of New Chance that met evidence standards, the average improvement index for completing school is +8 percentile points."
Discussion¶
Related Claims¶
- Accelerated middle schools show positive effects on progressing in school, with an average improvement index of +35 percentile points — related
- Accelerated middle schools show potentially positive effects on staying in school, with an average improvement index of +18 percentile points — related
- Dual enrollment programs have positive effects on completing high school, with an average improvement index of +7 percentile points — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
new-chance-improvement-index-plus-8 |
title |
The average improvement index for New Chance on completing school is +8 percentile points |
description |
The average improvement index for New Chance on completing school is +8 percentile points |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2008 |
generated |
by process:wiki-ingest on 2026-10-09 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — what-works-clearinghouse-2008 |
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