Compared with Colorado schools serving similar students, Mrachek Middle School scored 2.3 points below expected in English and 2.1 points below expected in math (CMAS scale-score points, 2024–2026). In English that puts it in the 37th percentile statewide after adjusting for demographics (raw: 7th), and #12 of 16 neighborhood middle schools in Adams-Arapahoe 28J. The difference is within normal year-to-year variation.
English vs. expected
−2.3
±3.4 pts · 37th pct. adjusted
English growth
45
median growth percentile · 26th among look-alikes
Math vs. expected
−2.1
±2.2 pts · 40th pct. adjusted
Math growth
40
median growth percentile · 17th among look-alikes
Met or exceeded expectations, by year
By year
2024
2025
2026
English vs. expected (pts)
−5.8
−2.3
+1.4
English growth (MGP)
35
49
52
Math vs. expected (pts)
−4.4
−1.6
0.0
Math growth (MGP)
36
42
43
Only 87% 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): 3.0× the poverty line. Enrollment (K–12): 820. 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.