Compared with Colorado schools serving similar students, Black Rock Elementary scored 2.1 points below expected in English and 0.1 points below expected in math (CMAS scale-score points, 2024–2026). In English that puts it in the 39th percentile statewide after adjusting for demographics (raw: 87th), and #20 of 29 neighborhood elementary schools in St Vrain Valley RE1J. The difference is within normal year-to-year variation.
English vs. expected
−2.1
±2.2 pts · 39th pct. adjusted
English growth
60
median growth percentile · 52nd among look-alikes
Math vs. expected
−0.1
±2.5 pts · 51st pct. adjusted
Math growth
56
median growth percentile · 28th among look-alikes
Met or exceeded expectations, by year
By year
2024
2025
2026
English vs. expected (pts)
−1.2
−3.7
−1.5
English growth (MGP)
63
47
68
Math vs. expected (pts)
+2.7
−2.6
−0.3
Math growth (MGP)
70
35
62
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): 6.3× the poverty line. Enrollment (K–12): 561. 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.