Claims

I-BEST has potentially positive effects on short-term earnings, with mixed results across states (average improvement index 0)

Claim · All claims
Evidence · 2 studies · 2 quant-synthesis r2 · q4
Currency · newest study 2020 · 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.

q4 i? One study showed a positive statistically significant earnings effect while another showed an indeterminate effect, yielding an outcome average effect size of 0 and improvement index of 0. → earn-1 q4 i? Within the Modicamore et al. (2017) study, earnings effects were positive in Maryland/Texas and Connecticut samples but negative in the Georgia sample. → earn-2

Evidence

earn-1

What Works Clearinghouse, Institute of Education Sciences, U.S. Department of Education. (2020, September). Integrated Basic Education Skills and Training (I-BEST). https://ies.ed.gov/ncee/wwc/InterventionReport/706

q4 · i? · quant-synthesis · r2

WWC synthesis across two studies (2,519 students): the outcome average for short-term earnings was effect size 0 and improvement index 0. Glosser et al. (2018) found working in a job paying $12 or more had effect size -0.03, p .85.

"The WWC determined that one study that meets WWC group design standards without reservations (Modicamore et al., 2017) showed evidence of a positive and statistically significant effect of I-BEST on short-term earnings, and one study that meets WWC group design standards without reservations (Glosser et al., 2018) showed evidence of an indeterminate effect of I-BEST on short-term earnings."

earn-2

What Works Clearinghouse, Institute of Education Sciences, U.S. Department of Education. (2020, September). Integrated Basic Education Skills and Training (I-BEST). https://ies.ed.gov/ncee/wwc/InterventionReport/706

q4 · i? · quant-synthesis · r2

In the Georgia sample (203 students), the intervention group earned $5,783.50 versus $7,154.60 for the comparison group one year after program, effect size -0.22, improvement index -9, p .08. Maryland/Texas (+5, p <.01) and Connecticut (+6, p .12) samples were positive.

"Earnings one year after program (Modicamore et al., 2017)b Georgia Sample 203 $5,783.50 $7,154.60 -$1,371.10 -0.22 -9 .08"

Discussion

Page metadata
Field Value
type claim
id ibest-mixed-short-term-earnings
title I-BEST has potentially positive effects on short-term earnings, with mixed results across states (average improvement index 0)
description I-BEST has potentially positive effects on short-term earnings, with mixed results across states (average improvement index 0)
status review
evidence_strength mixed
newest_evidence 2020
generated by process:wiki-ingest on 2026-10-09
trust unverified — no one has confirmed this page's content
sources 2 — earn-1, earn-2

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