- Enrollment
- 1,905
- Students per teacher
- 16.7:1
- Resource Index
- 32/100
Elementary school (grades K-5) · Carbondale, CO
Ross Montessori School
Federal NCES profile for Ross Montessori School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 38/100.
2024-25 NCES dataElementary school (grades K-5)NCES 080002001913Charter school
👥 S:T ratio 44
🌟 Gifted program 70
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Ross Montessori School earns 38/100 on the Resource Investment Index, with class sizes near the Colorado median.
- #3 of 3
- elementary schools in Carbondale · Resource Index
- 38
- Resource Index · Typical
- 14.1:1
- students per teacher
- 183
- students enrolled
Ross Montessori School has class sizes near the Colorado median. Computed live against every Colorado school reporting to NCES.
By Resource Investment Index, Ross Montessori School ranks #3 of 3 elementary schools in Carbondale, CO.
School address
District: State Charter School Institute · Colorado
NCES ID 080002001913 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
-37 students YoY
Ross Montessori School shrank from 250 students in 2022-23 to 213 in 2023-24 (-14.8%).
Teacher FTE lost 13.4 → 10.3 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Shrinking CCD campus
-37 students YoY 080002001913 · Carbondale, CO Elementary · SMALL · CHARTER
183 enr · 14.1:1 · RII 38
Nearest enrollment peer: The Pinnacle Charter School (1,905 students)
Ross Montessori School shrank from 250 students in 2022-23 to 213 in 2023-24 (-14.8%). Teacher FTE lost 13.4 → 10.3 across the same CCD years. Read with this school → · District book → · Colorado schools → · Find another →
Ross Montessori School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- The Pinnacle C
The Pinnacle Charter School
1,905 students
- Academy of Cha
Academy of Charter Schools
1,887 students
- Colorado Early
Colorado Early Colleges Douglas County
1,035 students
- Colorado Early
Colorado Early Colleges Fort Collins
971 students
- Thomas Maclare
Thomas Maclaren State Charter School
927 students
- This school 183
Ross Montessori School
183 students
What this shows Ross Montessori School reports 183 students on the CCD universe file.
How Ross Montessori School compares
Ross Montessori School is a shrinking campus on CCD: ratios and free-lunch share vs Colorado and U.S. means.
| Metric | This school | vs Colorado | Colorado avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 14.1:1 | ▼ 15% | 16.6:1 | 15.7:1 |
| Enrollment | 183 | top 78% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
14.1:1
Leaner classes than 56% of US schools, a middle-of-the-pack class size.
183
Bigger than 18% of US schools by enrollment, a small campus.
Equity indicators methodology
Staffing depth
14.1:1
students per teacher
- 15% below state mean
Top 33% in Colorado - lower ratio than 67% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
91.8%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$12,197
per pupil, district-wide
- below Colorado avg of $17,910
Well below the U.S. average per-pupil spend, a notably leaner funding position that may affect programs, facilities, and staffing.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
0
in-school suspensions + 2 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 1.1 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 54.6%
Hispanic or Latino 38.8%
Two or More 2.7%
African American 2.2%
Asian 1.1%
American Indian / Alaska Native 0.5%
Largest group: White at 54.6% of enrollment.
Student-body diversity index 55.0/100
Simpson diversity index - at 55.0, Ross Montessori School is more mixed than the Colorado school average of 47.1.
Programs
Gifted & talented Yes
District finance for State Charter School Institute reports $12,197 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Ross Montessori School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| The Pinnacle Charter School | Larger | No free-lunch data | Higher S:T ratio |
| Academy of Charter Schools | Larger | No free-lunch data | Higher S:T ratio |
| Colorado Early Colleges Douglas County | Larger | No free-lunch data | Higher S:T ratio |
| Colorado Early Colleges Fort Collins | Larger | No free-lunch data | Higher S:T ratio |
| Thomas Maclaren State Charter School | Larger | No free-lunch data | Lower S:T ratio |
Comparisons are relative to Ross Montessori School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,887
- Students per teacher
- 20.5:1
- Resource Index
- 22/100
- Enrollment
- 1,035
- Students per teacher
- 25.2:1
- Resource Index
- 49/100
- Enrollment
- 971
- Students per teacher
- 18:1
- Resource Index
- 52/100
- Enrollment
- 927
- Students per teacher
- 12.4:1
- Resource Index
- 47/100
Nationwide elementary schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~183 students)
Frequently asked questions about Ross Montessori School
How many students attend Ross Montessori School?
Ross Montessori School has 183 students enrolled. It is an elementary school in Carbondale, CO. CCD year-over-year: 250 (2022-23) → 213 (2023-24), down 37.
What is the student-teacher ratio at Ross Montessori School?
The student-teacher ratio at Ross Montessori School is 14.1:1, which is 15% lower than the Colorado average of 16.6:1 and 10% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What is the racial and ethnic makeup of Ross Montessori School?
The largest demographic group at Ross Montessori School is White at 54.6% of enrollment, in Carbondale, CO. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 55.0/100.
What is the Resource Investment Index for Ross Montessori School?
Ross Montessori School has a Resource Investment Index of 38/100 (typical reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, gifted-program reporting, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Ross Montessori School rank among elementary schools in Carbondale?
By Resource Investment Index, Ross Montessori School ranks #3 of 3 elementary schools in Carbondale, CO. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Carbondale on the city page.
What other schools are in State Charter School Institute?
Besides Ross Montessori School, State Charter School Institute also operates The Pinnacle Charter School (1,905 students), Academy of Charter Schools (1,887 students), and Colorado Early Colleges Douglas County (1,035 students). See the State Charter School Institute district page for the complete list.