Compared with Colorado schools serving similar students, Jefferson County Open Secondary scored 1.3 points above expected in English and 0.0 points above expected in math (CMAS scale-score points, 2024–2026). In English that puts it in the 52nd percentile statewide after adjusting for demographics (raw: 71st), and #7 of 35 neighborhood middle schools in Jefferson County R-1. The difference is within normal year-to-year variation.
English vs. expected
+1.3
±4.1 pts · 52nd pct. adjusted
English growth
57
median growth percentile · 90th among look-alikes
Math vs. expected
0.0
±3.7 pts · 50th pct. adjusted
Math growth
63
median growth percentile · 90th among look-alikes
Met or exceeded expectations, by year
By year
2024
2025
2026
English vs. expected (pts)
−3.1
+4.0
+3.3
English growth (MGP)
55
61
54
Math vs. expected (pts)
+2.5
+0.6
−3.3
Math growth (MGP)
62
61
66
Only 86% of students took the tests; families who opt out may differ from those who test.
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 middle schools.
Neighborhood family income (families with children near the school, NCES): 2.6× the poverty line. Enrollment (K–12): 320. 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.