Compared with Colorado schools serving similar students, Shaffer Elementary School scored 5.0 points below expected in English and 5.2 points below expected in math (CMAS scale-score points, 2024–2026). In English that puts it in the 26th percentile statewide after adjusting for demographics (raw: 85th), and #58 of 77 neighborhood elementary schools in Jefferson County R-1.
English vs. expected
−5.0
±2.8 pts · 26th pct. adjusted
English growth
54
median growth percentile · 20th among look-alikes
Math vs. expected
−5.2
±2.2 pts · 25th pct. adjusted
Math growth
54
median growth percentile · 32nd among look-alikes
Met or exceeded expectations, by year
By year
2024
2025
2026
English vs. expected (pts)
−3.3
−8.3
−3.3
English growth (MGP)
58
45
57
Math vs. expected (pts)
−5.6
−5.0
−5.0
Math growth (MGP)
50
51
60
Among the 25 most similar schools statewide — English vs. expected (pts)
Most similar on neighborhood income and education, free/reduced lunch, English learners and special education. Blue: above expected; red: below; gray: within normal swings.
Who it serves
The measures behind the comparison
Bars: this school (the area around it for education). Black tick: average of Colorado elementary schools.
Neighborhood family income (families with children near the school, NCES): 5.0× the poverty line. Enrollment (K–12): 490. Education is for adults aged 25–44 — the ages most likely to be parents — because the Census doesn’t publish parents’ education below the district level.
How to read this
Each school’s CMAS scores are compared with what Colorado schools serving similar students score, using a model fit across all neighborhood schools. “Vs. expected” is in CMAS scale-score points; growth is CDE’s median growth percentile (50 is typical). Full method and caveats.