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¶

Claim · All claims
Evidence · 1 study · associational r2 · q3
Currency · newest study 2016 · checked against its sources 2026-10-20 (automated, 1 of 1 entry) · not reviewed by a person · overdue for a recheck since 2019: tool and model accuracy changes quickly

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.

q3 i? Students scoring 350 (proficient) on the grade 6 math CST had only a 39 percent probability of achieving proficiency on the grade 8 algebra I CST; a scale score of 367 or higher was required for at least a 50 percent probability. → 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

Cross-tabulation of grade 6 math CST scale scores against grade 8 algebra I CST proficiency for the 2,579-student analytic sample identified the scale score associated with at least a 50 percent probability of proficiency; "Students who scored 350 had only a 39 percent probability of achieving proficiency."

"Students who scored 350 had only a 39 percent probability of achieving proficiency. Raising the probability to 50 percent required a scale score of 367 or higher on the grade 6 math CST (0.27 standard deviation above the proficiency threshold)."

Discussion¶

Learner Variables¶

Algebraic Thinking — outcome: instruction changes it

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 — related
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
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
The Elevate Math summer program significantly improved math achievement of rising grade 8 students, with a treatment-control difference equivalent to 0.7 standard deviation — 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 — a broader claim this one bears on

Page metadata

Field	Value
`type`	`claim`
`id`	`grade6-proficiency-insufficient-algebra-readiness-indicator`
`title`	`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`
`description`	`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 profi...`
`status`	`review`
`evidence_strength`	`moderate`
`newest_evidence`	`2016`
`source_checked`	`2026-10-20`
`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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