Teacher impacts on Black students' test scores vary widely, from 0.2 standard deviations in middle school English to 0.5 standard deviations in elementary school math between high- and low-effectiveness teachers¶
Claim · All claims
Evidence · 1 study · associationalr2·q2
Currency · newest study 2023 · not yet checked against its sources · not reviewed by a person · recheck by 2028: baselines and conditions change
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 difference between a teacher at about the 80th percentile of effectiveness for Black students and one at about the 20th percentile ranged from 0.2 SD in middle school English to 0.5 SD in elementary school math. → Delgado 2023
Evidence¶
Delgado 2023¶
Delgado, W. (2023). Is the Best Teacher the Best for Everyone? Variation of Teacher Effectiveness by Student Race. Chicago, IL: University of Chicago Consortium on School Research. https://consortium.uchicago.edu/publications/is-the-best-teacher-the-best-for-everyone
q2 · i? · associational · r2
Value-added analysis of Chicago Public Schools administrative data (ISAT and NWEA test scores, school years 2008-09 to 2016-17) estimating race-specific teacher value-add; the brief reports the difference "ranged from 0.2 standard deviations in middle school English to 0.5 standard deviations in elementary school math."
"The difference between a teacher with high effectiveness for Black students' test scores (at about the 80th percentile, or one standard deviation above the mean) relative to a teacher with low effectiveness (at about the 20th percentile, or one standard deviation below the mean) ranged from 0.2 standard deviations in middle school English to 0.5 standard deviations in elementary school math."
Discussion¶
Related Claims¶
- Race-specific value-added scores predict teachers' subsequent effects: Black students taught by a teacher with high prior effectiveness for Black students show gains of about one standard deviation when the teacher moves schools or grades — related
- Highest-performing teachers moved students up 4 to 14 percentile points per school year relative to the average district teacher — related
- Having a race-matched teacher is associated with higher test scores and long-term academic benefits for Black students — related
- Teacher effectiveness quintile dramatically changes achievement gains of low-achieving students in Tennessee value-added data — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
teacher-effectiveness-black-students-varies-widely |
title |
Teacher impacts on Black students' test scores vary widely, from 0.2 standard deviations in middle school English to 0.5 standard deviations in elementary school math between high- and low-effectiveness teachers |
description |
Teacher impacts on Black students' test scores vary widely, from 0.2 standard deviations in middle school English to 0.5 standard deviations in elementary school math between high- and low-effectiveness teachers |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2023 |
recheck_by |
2028 |
generated |
by process:wiki-ingest on 2026-10-09 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — delgado-2023 |
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