Altona Middle School
Score 96.7/100: better than 96% of Colorado middle schools on 2025-26 state tests. Schools are only compared with others of the same type in the same state. How we score schools
Performance (state tests, 2025-26)
% met or exceeded expectations on state tests in Colorado, all students. Colored bars are green when the school is at or above the average for similar Colorado schools.
Results over time
How this school's published results have moved year by year.
All 9 published results by grade and test
As published by Colorado Department of Education. "Hidden" means the state didn't publish the result to protect student privacy.
| Subject | Grade | Test | Result | Students tested |
|---|---|---|---|---|
| English language arts | Grade 6 | CMAS | 73.2 | 209 |
| English language arts | Grade 7 | CMAS | 78.7 | 207 |
| English language arts | Grade 8 | CMAS | 72.3 | 166 |
| English language arts | All grades | CMAS | 74.9 | 582 |
| Math | Grade 6 | CMAS | 62.5 | 216 |
| Math | Grade 7 | CMAS | 68.1 | 210 |
| Math | Grade 8 | CMAS | 73.7 | 171 |
| Math | All grades | CMAS | 67.7 | 597 |
| Science | Grade 8 | CMAS | 62.9 | 167 |
School profile
- Grades
- 6-8
- Students
- 741
- Type
- Middle school
- Charter school
- No
- Program
- Regular
Students
District and location
Contact
Longmont, CO 80503
"Typical" is the middle (median) middle school in Colorado. Higher or lower is not in itself better or worse. Address, phone and website are as the state reported them to the U.S. Department of Education for 2024-25, so check with the school before visiting. School details: U.S. Department of Education, Common Core of Data (enrollment 2023-24, lunch eligibility 2024-25).
Nearby middle schools
Straight-line distance. Check the district's attendance zones: living close to a school doesn't guarantee a place.
Explore schools around Longmont
Location
Official sources
Every figure on this page comes from published government data. Check the originals here; we refresh when states release new results.
U.S. Department of Education, National Center for Education Statistics, Common Core of Data (CCD): school directory, grades served, enrollment and free/reduced-price lunch, 2023-24 and 2024-25. Spotted a mistake? Tell us.
Altona Middle School at a glance
Altona Middle School is a public middle school in Longmont, Colorado, serving grades 6-8. It is part of St. Vrain Valley School District No. Re1J. It has about 741 students (a typical Colorado middle school has 467). About 23% of students are eligible for free or reduced-price lunch, compared with 49% at a typical Colorado middle school, which is useful context when reading test results.
In 2025-26 state tests, 75% in English language arts (similar schools: 44%) and 68% in math (similar schools: 35%) reached the state standard (% met or exceeded expectations). On our score, which compares it only with other Colorado middle schools, it scores 96.7 out of 100: better than 96% of them, ranking #9 of 255. Its English language arts result rose by 3 points from the year before. This overview is generated automatically from published state and federal data; figures are rounded, and you can check the originals via the official sources above.
Page updated 2026-10-12.