Ross Montessori School
Score 50.0/100: better than 50% of Colorado K-8 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 16 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 3 | CMAS | not reported | 16 |
| English language arts | Grade 4 | CMAS | 42.1 | 19 |
| English language arts | Grade 5 | CMAS | 52.4 | 21 |
| English language arts | Grade 6 | CMAS | 26.3 | 19 |
| English language arts | Grade 7 | CMAS | 55.6 | 27 |
| English language arts | Grade 8 | CMAS | not reported | 16 |
| English language arts | All grades | CMAS | 44.1 | 111 |
| Math | Grade 3 | CMAS | not reported | 16 |
| Math | Grade 4 | CMAS | 31.6 | 19 |
| Math | Grade 5 | CMAS | 33.3 | 21 |
| Math | Grade 6 | CMAS | 26.3 | 19 |
| Math | Grade 7 | CMAS | 33.3 | 27 |
| Math | Grade 8 | CMAS | not reported | 16 |
| Math | All grades | CMAS | 32.1 | 112 |
| Science | Grade 5 | CMAS | 23.8 | 21 |
| Science | Grade 8 | CMAS | not reported | 16 |
School profile
- Grades
- PK-8
- Students
- 213
- Type
- K-8 school
- Charter school
- Yes
- Program
- Regular
Students
District and location
Contact
Carbondale, CO 81623
"Typical" is the middle (median) K-8 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 K-8 schools
Straight-line distance. Check the district's attendance zones: living close to a school doesn't guarantee a place.
Explore schools around Carbondale
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.
Ross Montessori School at a glance
Ross Montessori School is a public K-8 school (a charter school) in Carbondale, Colorado, serving grades PK-8. It is part of the State Charter School Institute school district. It has about 213 students (a typical Colorado K-8 school has 504). About 33% of students are eligible for free or reduced-price lunch, compared with 50% at a typical Colorado K-8 school, which is useful context when reading test results.
In 2025-26 state tests, 44% in English language arts (similar schools: 45%) and 32% in math (similar schools: 37%) reached the state standard (% met or exceeded expectations). On our score, which compares it only with other Colorado K-8 schools, it scores 50.0 out of 100: better than 50% of them, ranking #85 of 169. Its English language arts result was broadly unchanged 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.