In the Linkow et al. (2017) QED, coaching produced a statistically significant positive effect on cumulative college GPA¶
Claim · All claims
Evidence · 1 study · causalr2·q2
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.
q2 i? The 2017 study found a statistically significant positive effect on cumulative college GPA among 1,990 students (Table 4 reports 2.45 versus 2.26, effect size 0.18, improvement index +7, p < .01). → What Works Clearinghouse 2020
Evidence¶
What Works Clearinghouse 2020¶
What Works Clearinghouse, Institute of Education Sciences, U.S. Department of Education. (2020). Success Boston Coaching (WWC 2021-001). https://ies.ed.gov/ncee/wwc/InterventionReport/708
q2 · i? · causal · r2
QED with 610 intervention and 1,380 comparison students matched on baseline characteristics. Table 4 reports GPAs of 2.45 (SD 0.92) versus 2.26 (SD 1.08), effect size 0.18, improvement index +7, p < .01; the quoted finding sentence prints no effect size.
"The study showed evidence of a statistically significant positive effect in the academic achievement domain. This finding is based on an outcome analysis that includes 1,990 students."
Discussion¶
Related Claims¶
- In the Linkow et al. (2019) scale-up QED, coaching showed no statistically significant effect on cumulative college GPA (effect size 0.01, p = 0.82) — related
- Success Boston Coaching has potentially positive effects on academic achievement, with a significant effect in one study and an indeterminate effect in the other — related
- Success Boston Coaching has potentially positive effects on progressing in college, based on two quasi-experimental studies meeting WWC standards with reservations — related
- In the Linkow et al. (2017) QED, coaching produced a statistically significant positive effect on second-year college enrollment — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
linkow-2017-significant-gpa-effect |
title |
In the Linkow et al. (2017) QED, coaching produced a statistically significant positive effect on cumulative college GPA |
description |
In the Linkow et al. |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2020 |
generated |
by process:wiki-ingest on 2026-10-09 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — what-works-clearinghouse-2020 |
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