Enrollment
183
Elementary
DISTRICT 291 · STATE 379
SCHOOL COMMUNITY·STATE CHARTER SCHOOL INSTITUTE·NCES 080002001913
Ross Montessori School
109 LEWIES LANE, CARBONDALE, CO 81623 · (970) 963-7199 · Garfield County
GRADES PK–08ELEMENTARY33-TOWNCHARTERREGULAR SCHOOL183 STUDENTS
C
allk12 Grade
Scored higher than 31% of Colorado public elementary schools
- B-Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- DBeats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
- ·Three-year trend Not available for this school, so the grade uses the other parts.
Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded Colorado public elementary schools
Student : Teacher
19.2:1
10 FTE teachers
DISTRICT 15.0:1 · STATE 16.6:1
Free / Reduced Lunch
38%
70 students
DISTRICT 53% · STATE 50%
Community
0
0 members
Enrollment and student:teacher ratio compared against other elementary schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Pre-K | 6 | 3% |
| Kindergarten | 15 | 8% |
| Grade 1 | 16 | 9% |
| Grade 2 | 18 | 10% |
| Grade 3 | 25 | 14% |
| Grade 4 | 26 | 14% |
| Grade 5 | 22 | 12% |
| Grade 6 | 26 | 14% |
| Grade 7 | 14 | 8% |
| Grade 8 | 15 | 8% |
This year's kindergarten class (15) is about the same size as its 8th grade class (15).
Student demographics
55%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 61% · STATE 62% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Test scores
CMAS 2024-25 . % Met or Exceeded ExpectationsEnglish Language Arts
44.3%
CO avg 44.9% . +0.3pp since 2023
Math
30.7%
CO avg 36.1% . +8.3pp since 2023
What this means: On the CMAS, Colorado's statewide test, about 44 of every 100 students at this school read and write at grade level and about 31 of 100 do math at grade level. Across all Colorado schools, those numbers are about 45 and 36. Reading and writing scores have held steady since 2023, while math scores are up about 8 points.
CMAS results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 44.3% | 30.7% |
| 2023-24 | 44.0% | 22.4% |
% Met or Exceeded Expectations, all students and all tested grades.
Source: CMAS. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
35.4%
composite math + reading, all grades
Predicted
43.5%
based on CO schools with similar FRL share
Beats by
-8.2pp
below demographic expectation
What this means: About 35% of students here test proficient in math and reading, compared with the roughly 44% typical for Colorado schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among Colorado's top nor bottom 10%.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Schools most like Ross Montessori School
Ross Montessori School's state test result (35.4% proficient) is higher than 0 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Ross Montessori School this school | 183 | 38.3% | 35.4% |
| Animas Valley Elementary School DURANGO | 185 | 37.8% | 40.8% |
| Summit Cove Elementary School DILLON | 222 | 32.0% | 41.9% |
| Buena Vista Elementary School COLORADO SPRINGS | 194 | 35.1% | 49.0% |
| Lincoln Elementary School LOVELAND | 196 | 47.4% | 40.4% |
| Carbondale Community Charter School CARBONDALE | 143 | 37.1% | 54.1% |
Matched among Colorado elementary schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where Ross Montessori School ranks
Among elementary schools| Measure | This school | In Colorado | In Garfield County |
|---|---|---|---|
| State test proficiency ranked highest first | 35.4% | #502 of 931 | #4 of 14 |
| Math proficiency ranked highest first | 30.7% | #533 of 940 ▲ 114 | #5 of 14 ▲ 2 |
| Reading proficiency ranked highest first | 44.3% | #446 of 946 ▼ 8 | #2 of 14 no change |
| Enrollment ranked largest first | 183 | #913 of 1,056 | #14 of 15 |
| Free and reduced lunch ranked highest share first | 38.3% | #607 of 983 | #13 of 15 |
| Enrollment change since 2017-18 ranked steepest decline first | -39.6% | #30 of 664 | N/A |
Ranked against other public elementary schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
183
-130 (-42%) vs 2020
-11% since 2010-11, when it was 205
Student : Teacher
19.2:1
was 20.9:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 183 | 9.6 | 19.2:1 | 38% (70) |
| 2023-24 | 213 | 10.3 | 20.8:1 | N/A |
| 2022-23 | 250 | 13.4 | 18.6:1 | N/A |
| 2020-21 | 313 | 15 | 20.9:1 | N/A |
| 2017-18 | 303 | 14.8 | 20.4:1 | 26% (80) |
| 2015-16 | 262 | 15 | 17.5:1 | 21% (54) |
| 2010-11 | 205 | 14 | 14.6:1 | 17% (34) |
Source: NCES Common Core of Data. Rows are the federal collections on file for Ross Montessori School.
Since 2017-18: students down 40% (303 to 183); teachers down 36% (14.8 to 9.6).
About Ross Montessori School
Ross Montessori School is a small elementary school for students in CARBONDALE, Colorado. It enrolled 183 students in pre-K through 8 for the 2024-25 school year. Statewide, elementary schools in Colorado average about 379 students each.
Ross Montessori School is among 49 schools run by State Charter School Institute, which serves 21,411 students.
White students are the majority at Ross Montessori School, with 55% of enrollment. The school is also 39% Hispanic, 3% multiracial, and 2% Black. The White share of the county population is higher, at 69%. The school's diversity index is 55%, meaning two students picked at random have a 55% chance of belonging to different racial or ethnic groups.
Federal data list 9.6 full-time-equivalent teachers at Ross Montessori School in 2024-25, for a ratio of 19.2:1. That is higher than the 16.6:1 average for elementary schools in Colorado. The lunch program counts 38% of students at Ross Montessori School as eligible for free or reduced-price meals. For comparison, public schools in Garfield County average 50%.
Measured against Colorado public elementary schools, Ross Montessori School receives a C. The grade weighs proficiency most heavily, then how results compare with what the school's low-income share predicts, then the three-year change.
Based on student poverty, the model expects 43.5% at Ross Montessori School; the school's average proficiency rate on state tests is 35.4%.
Garfield County has these Census figures: the median household income is $91,131, roughly 34% of adults have a four-year degree or more, and about 5% of residents live below the federal poverty line. Garfield County is home to 29 public schools and about 10,790 public school students.
Nearest public school: Bridges, about 0.1 miles away. Within five miles are 5 other public schools. Ross Montessori School is 4th of 7 nearby schools by average proficiency rate.
The school's locale code, Town: Remote, means it is in a town far from an urbanized area. As a charter school, Ross Montessori School is publicly funded and operates under a charter.
In 2020-21, federal data counted 313 students at Ross Montessori School; in 2024-25, 183. The grades served may not have been the same in both years. The ratio of students to teachers went from 20.9:1 to 19.2:1 over the same years.
The Ross Montessori School community page is open for posts about sports schedules, lunch menus, and spirit week. Anyone with firsthand experience at this school can post or comment.
Garfield County at a glance
View full county profilePopulation
62,479
Census ACS
Median income
$91,131
Household, ACS
Bachelor's+
34%
Adults 25+
Poverty rate
5%
Below federal line
Schools in county
29
10,790 students
Quick facts
Related schools
Other schools in State Charter School Institute
- The Pinnacle Charter SchoolCombined · 1,905 students
- Academy of Charter SchoolsCombined · 1,887 students
- Colorado Early Colleges Douglas CountyHigh · 1,035 students
- Colorado Early Colleges Fort CollinsHigh · 971 students
- Thomas MacLaren State Charter SchoolCombined · 965 students
- Caprock AcademyCombined · 871 students
Other schools in CARBONDALE
- Roaring Fork High SchoolHigh · 472 students
- Crystal River Elementary SchoolElementary · 445 students
- Carbondale Middle SchoolMiddle · 362 students
- Carbondale Community Charter SchoolElementary · 143 students
- BridgesHigh · 68 students
Nearby schools
- Bridges0.1 mi · 68
- Carbondale Middle School0.4 mi · 362
- Crystal River Elementary School0.4 mi · 445
- Roaring Fork High School0.7 mi · 472
- Carbondale Community Charter School1.4 mi · 143
- Riverview School7.7 mi · 383
Frequently asked questions
About Ross Montessori SchoolHow large is Ross Montessori School?
Ross Montessori School enrolls approximately 183 students in grades PK-08.
What age range does Ross Montessori School serve?
Ross Montessori School serves students from grade PK through grade 08.
How many teachers does Ross Montessori School have?
Ross Montessori School employs 10 FTE teachers, for a student-to-teacher ratio of 19.2:1.
What is the student diversity at Ross Montessori School?
Student demographics at Ross Montessori School are roughly 55% White, 39% Hispanic, 2% Black, 1% Asian, 3% Two or more.
Who oversees Ross Montessori School?
Ross Montessori School is overseen by State Charter School Institute in Garfield County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.