School median student growth percentiles were stable year to year even when the school changed principals¶
Claim · All claims
Evidence · 1 study · associationalr?·q2
Currency · newest study 2015 · checked against its sources 2026-10-20 (automated, 1 of 1 entry) · not reviewed by a person
Subclaims¶
Reading the evidence codes
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q2 i? School median student growth percentiles exhibit year-to-year stability even when the school changes principals, which may reflect persistent school characteristics rather than the individual principal. → Christine Ross 2015
Evidence¶
Christine Ross 2015¶
Christine Ross, Mariesa Herrmann, Megan Hague Angus. (2015). Measuring Principals' Effectiveness: Results from New Jersey's Principal Evaluation Pilot. Washington, DC: U.S. Department of Education, Institute of Education Sciences, National Center for Education Evaluation and Regional Assistance, Regional Educational Laboratory Mid-Atlantic. https://ies.ed.gov/ncee/edlabs/regions/midatlantic
q2 · i? · associational · r?
Observational analysis of pilot data on school median student growth percentiles. The report finds "year-to-year stability even when the school changes principals" and attributes this, as an interpretation, to persistent school characteristics. No stability coefficient is printed on this page.
"School median student growth percentiles, which measure student achievement growth during the school year, exhibit year-to-year stability even when the school changes principals. This may reflect persistent school characteristics,"
Discussion¶
Related Claims¶
- After three years with a new principal, the average DCPS student's reading achievement increased by 4 percentile points (0.09 standard deviations) relative to retained-principal comparison schools — related
- Principal practice ratings varied across the score range in New Jersey's pilot year, but most principals received ratings of effective or highly effective — related
- School median student growth percentiles correlate with student disadvantage — related
- Averaging principal performance measures across multiple recent years does not improve their accuracy for predicting principals' contributions in the following year — related
- School value-added and adjusted school value-added provide, at most, a small amount of information for predicting principals' contributions in the following year — related
- Average achievement and adjusted average achievement provide no information for predicting principals' contributions to student achievement in the following year — related
- Insight survey domain averages are more stable across years when a school keeps the same leader, suggesting principals affect these measures — related
- When a school gets a new principal, Insight survey domain scores change more than student proficiency rates — related
- Principals are essential to student achievement, with principals' effects almost as large as teachers' effects — related
- Student growth measures describe gains in student learning based on how much students' test scores changed over a school year — related
- Principal practice instrument ratings and school median student growth percentiles showed moderate to high year-to-year stability, but growth percentiles changed more across years in smaller schools — related
- There is little prior evidence on the validity of principal evaluation measures, and this is the first study linking practice ratings to credible value-added measures — related
- School value added can reflect school-specific influences on student achievement growth that are outside principals' control — related
- Ninth-grade teachers' grade effects are stable across years — related
- Effective principals have positive effects on student outcomes including grades, test scores, attendance, discipline, and long-term attainment — related
- A large-scale long-term study examined the measurement stability of Rasch measurement scales that had been in place for almost 40 years — related
- School value-added and adjusted school value-added provide at most a small amount of information for predicting principals' future contributions to student achievement — related
- Value-added estimates are likely to be noisy with the amount of data typically used in practice — related
- NISL-trained principals' schools outperformed comparable non-NISL schools in student achievement over a 4-year period — related
- Principals exhibit an incomplete understanding of how achievement growth is captured in EPIC performance measures — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
school-mgp-stable-despite-principal-change |
title |
School median student growth percentiles were stable year to year even when the school changed principals |
description |
School median student growth percentiles were stable year to year even when the school changed principals |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2015 |
source_checked |
2026-10-20 |
generated |
by process:wiki-ingest on 2026-10-08 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — christine-ross-2015 |
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