Using grade 6 math CST scale scores rather than proficiency status increases the accuracy of grade 8 algebra I placement decisions from 69 to 75 percent¶
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Evidence · 1 study · associationalr2·q3
Currency · newest study 2016 · not yet checked against its sources · not reviewed by a person · overdue for a recheck since 2019: tool and model accuracy changes quickly
Subclaims¶
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q is the design tier, i the impact, n the sample, and the kind with its r
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q3 i? Predicting grade 8 algebra I proficiency from continuous grade 6 math CST scale scores with a logistic regression increased placement accuracy by 6 percentage points over decisions based on proficiency status alone. → Chun-Wei Huang 2016
Evidence¶
Chun-Wei Huang 2016¶
Chun-Wei Huang, Jason Snipes, Neal Finkelstein, WestEd. (2016). Using assessment data to guide math course placement of California middle school students. SREE Spring 2016 Conference. https://eric.ed.gov/?id=ED567123
q3 · i? · associational · r2
Logistic regression analysis of 2,579 grade 8 algebra I students in SVRA districts (2011/12) predicted algebra I CST proficiency from grade 6 math CST scale scores; the study reports this approach "increases the accuracy of algebra I placement decisions in grade 8 from 69 percent to 75 percent."
"Using students’ grade 6 math CST scale score rather than proficiency status increases the accuracy of algebra I placement decisions in grade 8 from 69 percent to 75 percent."
Discussion¶
Related Claims¶
- When scale scores are used, prediction accuracy of grade 8 algebra I proficiency does not vary substantially across grade 6 CST, grade 7 CST, and MDTP assessments (75–78 percent) — related
- Grade 6 math CST proficiency alone is not an effective indicator of algebra readiness: students need a scale score of 367, about 0.27 SD above the cutpoint, to reach a 50 percent probability of grade 8 algebra I proficiency — related
- Revisiting grade 8 algebra placement with grade 7 math CST scores does not necessarily yield more accurate placement outcomes, because predictions from different assessments largely overlap — related
- MDTP scores on five of seven topics significantly predict grade 8 algebra I proficiency after controlling for grade 6 CST scale score — related
- Logistic regression can identify the ELP score at which students have a probability of 0.5 of being proficient on the academic content assessment, as a candidate English-proficient standard — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
grade6-cst-scale-scores-improve-algebra-placement-accuracy |
title |
Using grade 6 math CST scale scores rather than proficiency status increases the accuracy of grade 8 algebra I placement decisions from 69 to 75 percent |
description |
Using grade 6 math CST scale scores rather than proficiency status increases the accuracy of grade 8 algebra I placement decisions from 69 to 75 percent |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2016 |
recheck_by |
2019 |
generated |
by process:wiki-ingest on 2026-10-09 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — chun-wei-huang-2016 |
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