School report card · CMAS 2024–2026

Altona Middle SchoolDraft

St Vrain Valley RE1J · Longmont · middle (grades 6–8)
+14.0
scale-score points vs.
expected (Eng + math avg.)

Compared with Colorado schools serving similar students, Altona Middle School scored 13.6 points above expected in English and 14.4 points above expected in math (CMAS scale-score points, 2024–2026). In English that puts it in the 90th percentile statewide after adjusting for demographics (raw: 96th), and #1 of 12 neighborhood middle schools in St Vrain Valley RE1J.

English vs. expected
+13.6
±1.5 pts · 90th pct. adjusted
English growth
65
median growth percentile · 96th among look-alikes
Math vs. expected
+14.4
±1.3 pts · 93rd pct. adjusted
Math growth
67
median growth percentile · 100th among look-alikes
Met or exceeded expectations, by year
50%60%70%80%202420252026English 75%Math 68%
By year
202420252026
English vs. expected (pts)+14.0+12.0+14.8
English growth (MGP)656466
Math vs. expected (pts)+13.5+14.6+15.3
Math growth (MGP)656868

Only 83% 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.
Denver Green School Northfield+20.8Northridge+19.4Altona+13.6Ridgway+7.4Discovery Canyon Campus+6.0Westlake+4.3Challenger+4.1Bear Creek+3.9Westview+3.5Webber+2.8Lesher+2.6Mountain Ridge+2.0Deer Creek+1.5Sky Vista+0.2Eagleview−1.4Mandalay−1.9Preston−2.7Miller−2.7Fox Ridge−3.2Falcon Bluffs−3.4Dunstan−4.7Oberon−5.6Wayne Carle−6.3Timberview−7.0Drake Junior High School−8.5Crested Butte Secondary School−10.7

Who it serves

The measures behind the comparison
Bars: this school (the area around it for education). Black tick: average of Colorado middle schools.
Adults 25–44 with a bachelor’s+63%Free/reduced-price lunch22%English learners10%Students with IEPs12%

Neighborhood family income (families with children near the school, NCES): 4.5× the poverty line. Enrollment (K–12): 740. 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.