Five-year longitudinal cohort dataset of 4,228 students assessed up to three times per year comparing ever-SPED and never-SPED growth¶
Product or Programme · All products and programmes
Evidence · 4 claims (4 for) · 1 study (1 associational),q2· 0 of 1 report an effect size · 4 claims rest on one study
Description¶
A research dataset assembled and analyzed by Angela Johnson (2021) that follows 4,228 students from kindergarten through fourth grade with repeated math and reading assessments to compare growth by special-education status and season.
Components¶
Claims¶
- Ever-SPED students grew more than never-SPED students during the 1st and 2nd grade school years in math and the 1st, 3rd, and 4th grade school years in reading [+W]
- Ever-SPED students lost more learning than never-SPED students during every summer from kindergarten through 4th grade [+W]
- Ever-SPED students started kindergarten with lower math and reading scores and grew less than never-SPED students during the kindergarten school year [+W]
- Test score disparities between ever-SPED and never-SPED students grew from under 0.4 standard deviations in kindergarten to 0.9 standard deviations in 4th grade [+W]
Related Products and Programmes¶
Key Sources¶
- Angela Johnson, Elizabeth Barker. (2021). Understanding differential growth during school years and summers for students in special education. NWEA Research Working Paper. https://www.nwea.org/research/publication/understanding-differential-growth-during-school-years-and-summers-for-students-in-special-education-paper/
Page metadata
| Field | Value |
|---|---|
type |
product |
id |
five-year-longitudinal-cohort-dataset-of-4228-students-assessed-up-to-three-times-per-year |
title |
Five-year longitudinal cohort dataset of 4,228 students assessed up to three times per year comparing ever-SPED and never-SPED growth |
description |
A research dataset assembled and analyzed by Angela Johnson (2021) that follows 4,228 students from kindergarten through fourth grade with repeated math and reading assessments to compare growth by special-education status and season. |
status |
review |
moved_from |
element/nwea-4228-cohort-sped-growth-dataset |
product_kind |
dataset |
generated |
by process:sweep-kinds on 2026-10-10 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — angela-johnson-2021 |
Frontmatter is the page's machine-readable record — see the Schema & Guide.