Mean effects of community college interventions on marginal (per-semester) enrollment and credits earned decrease over time, with decreasing variability¶
Claim · All claims
Evidence · 1 study · quant-synthesisr2·q2
Currency · newest study 2023 · 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 mean effect on credits earned in a given semester falls from 0.48 credits in semester 1 to 0.02 credits by semester 6, and the spread of the intervention-level distribution is widest in semester 1. → Michael J. Weiss 2023
Evidence¶
Michael J. Weiss 2023¶
Michael J. Weiss, Marie-Andrée Somers, & Colin Hill. (2023). Empirical Benchmarks for Planning and Interpreting Causal Effects of Community College Interventions. Journal of Postsecondary Student Success 3(1). https://doi.org/10.33009/fsop_jpss132759
q2 · i? · quant-synthesis · r2
FIRC-based secondary analysis of the THE-RCT RCTs, Results section, marginal outcomes. The article states "The mean (across interventions) effect on marginal enrollment and credits earned decreases over time" and that the spread of effects is widest in semester 1.
"the mean effect on credits earned starts at 0.48 credits in semester 1, and decreases to 0.43, 0.25, 0.17, 0.05, and 0.02 credits in semesters 2– 6 , respectively"
Discussion¶
Related Claims¶
- Mean effects of community college interventions on cumulative credits earned increase over the first six semesters after random assignment, reaching 1.14 credits by semester 3 — related
- Mean effects of community college interventions on marginal (per-semester) enrollment and credits earned decrease over time — possibly the same claim (merge candidate)
- Cross-intervention variation in community college intervention effects is substantial: for first-semester credits earned, the true-effect standard deviation (0.55 credits) exceeds the mean effect (0.48 credits) — related
- For credits earned in semester 1, the estimated distribution of true intervention effects has a mean of 0.48 credits, a cross-intervention standard deviation of 0.55 credits, and a 75th percentile of 0.60 credits — related
- The Detroit Promise Path effect of 1.8 credits earned after two semesters sits at the 83rd percentile of the distribution of community college intervention effects, indicating a quite large effect — related
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