Cited by 91School Choice and PerformanceMathematics Education and ProgramsMathematics Education and Pedagogy

Intensive Math Instruction and Educational Attainment: Long-Run Impacts of Double-Dose Algebra

Open access
Cortes, Kalena E., Goodman, Joshua S., Nomi, Takako·2015·Journal of Human Resources

Abstract

We study an intensive math instruction policy that assigned low-skilled 9th graders to an algebra course that doubled instructional time, altered peer composition and emphasized problem solving skills.A regression discontinuity design shows substantial positive impacts of double-dose algebra on credits earned, test scores, high school graduation and college enrollment rates.Test score effects under-predict attainment effects, highlighting the importance of long-run evaluation of such a policy.Perhaps because the intervention focused on verbal exposition of mathematical concepts, the impact was largest for students with below average reading skills, emphasizing the need to target interventions toward appropriately skilled students.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1353/jhr.2015.0004

Cites

52 of 52 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Average treatment effects are about one-quarter as large as the estimated benefit of a 30 percent reduction in elementary class size, or of doubling middle and high school math class time.

    “Additionally, these average treatment effects are also roughly one-quarter the estimated gain from reducing class size by 30 percent in elementary grades (Kruger 1999), or the estimated gain from doubling the amount of class time middle and high school students spend in math (Taylor 2014, Cortes, Goodman, and Nomi 2015).”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

2 of the 54 references couldn’t be matched to a known paper.

Research works printed but not linked: 1

  1. Checkoway, A., B. Boulay, B. Gamse, M. Caven, L. Fox, K. Kliorys, R. Luck, K. Maree, M. Velez, and M. Woodford (2011). Evaluation of the expanded learning time initiative year four integrated report: 2009-10. Annual report, Abt Associates Inc., Cambridge, Mass.

Cited by

Sorted by citations

Authors
Cortes, K. E., Goodman, J. S., & Nomi, T.
Affiliations
Texas A&M University (US)
Corresponding author
Goodman, Joshua S.
Venue
Journal of Human Resources
Published
2015
Volume
50
Issue
1
Pages
108-158
ISSN
  • 0022-166X (ISSN-L)
  • 1548-8004
OpenAlex
W2890110215
Cited by
91
References
54
Citations by year
2026: 8 · 2025: 3 · 2024: 5 · 2023: 7 · 2022: 8 · 2021: 9 · 2020: 4 · 2019: 11 · 2018: 10 · 2017: 10 · 2016: 7 · 2015: 5 · 2014: 3 · 2013: 1
FWCI
53.36
Type
journal article
Language
en
Open access
Locations
The Journal of Human Resources (publishedVersion)
Funders
  • Institute of Education Sciences (R305A120466)
  • Stanford Graduate School of Education
Topics
  • Social Sciences › Education › School Choice and Performance
  • Physical Sciences › Mathematics › Modeling and Simulation › Mathematics Education and Programs
  • Physical Sciences › Mathematics › Applied Mathematics › Mathematics Education and Pedagogy
Keywords
educational attainment, high school graduation, college enrollment, test scores, peer composition, problem-solving skills, reading skills, long-term effects, education policy evaluation, regression discontinuity design

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review