The Anderson School scores at the ceiling — and proves nothing
A reproducibility log: the data this analysis touched, the queries it ran, the outside sources it leaned on, and the steps a third party would follow to re-run it.
Summary
Profile of The Anderson School (M.S. 334), one of New York City's two K-8 city-wide G&T programs, illustrating a school whose outcome distribution is at the test ceiling because its admissions screen selects from the 90+ percentile of the kindergarten G&T assessment.
Data sources
- Database tableschools
One row per New York City public school (DBN, name, district, borough, school_type, grade_band, latest_enrollment, proclivity_decile, proclivity_score, closed_at, admission_category).
- Database tableschool_year_metrics
Long-format per-school per-year metric facts (school_dbn, year, metric_key, subgroup, value, suppressed). Loaded from DOE/NYSED public files via scripts/loaders/*.
- External datasetNYC DOE Gifted & Talented program documentation
Steps
Pull all-grade ELA + math proficiency at M.S. 334 (DBN 03M334), 2018-19 through 2024-25.
SELECT year, metric_key, value FROM school_year_metrics WHERE school_dbn='03M334' AND metric_key IN ('ela_all_proficiency','math_all_proficiency') AND subgroup='ALL' AND suppressed=false ORDER BY year, metric_key;Compare with peer K-8 G&T programs (NEST+m, TAG Young Scholars) for the same window.
Caveats
Anderson's outcome is tightly coupled to its admissions screen — students enter at the 90+ percentile of the G&T assessment. The case-study framing is selection-effect illustration, not an evaluation of instructional quality.
Reproduce
Clone the repo, set DATABASE_URL to a Postgres with the project schema loaded, run `npx tsx scripts/loaders/<source>.ts` for any not-yet-loaded data, then issue the queries in the Steps section. The story page also lists the exact `metric_key`/`subgroup`/`year` filters used. Searchable by the answer's headline number — every figure is recomputable from the queries shown.
The recipe lives at data/stories/recipes.ts in the repo. Corrections welcome.