Compared with Colorado schools serving similar students, Lyons Middle/Senior High School scored 10.8 points above expected in English and 3.1 points above expected in math (CMAS scale-score points, 2024–2026). In English that puts it in the 84th percentile statewide after adjusting for demographics (raw: 95th), and #2 of 12 neighborhood middle schools in St Vrain Valley RE1J.
English vs. expected
+10.8
±3.4 pts · 84th pct. adjusted
English growth
55
median growth percentile · 69th among look-alikes
Math vs. expected
+3.1
±3.3 pts · 64th pct. adjusted
Math growth
45
median growth percentile · 38th among look-alikes
Met or exceeded expectations, by year
By year
2024
2025
2026
English vs. expected (pts)
+11.0
+13.6
+7.8
English growth (MGP)
49
59
56
Math vs. expected (pts)
+3.4
+6.5
−0.6
Math growth (MGP)
47
44
44
Only 72% 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): 6.9× the poverty line. Enrollment (K–12): 346. 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.