Skip to main content

Average

#1169 of 1,815 schools in CO

Ross Montessori School

Elementary School · State Charter School Institute

109 LEWIES LANE, Carbondale, CO 81623

Charter

Enrollment

213

Student-Teacher

21.3:1

Score

5.7

Grades

Kindergarten – 8th

Updated 2022-23

How this school compares

In Carbondale

#4 of 6

public schools

Colorado elementary schools

#686 of 1,006

In district

#19 of 39

State Charter School Institute

Academic growth

7.4 / 10

Strong

About Ross Montessori School

Ross Montessori School is a charter school located in the remote town of Carbondale, Colorado. Serving kindergarten through eighth grade, Ross Montessori offers a unique educational experience with an enrollment of 213 students and a student-teacher ratio of 21.3:1. The school employs ten full-time equivalent teachers who are dedicated to fostering a nurturing environment that emphasizes hands-on learning and individualized instruction.

While the MySchoolScout rating for Ross Montessori is 4.7 out of 10, placing it in the 39th percentile among Colorado schools, there's significant potential for academic growth. The school’s state ranking reflects areas where it could improve, particularly in math performance with only 25% of students proficient or above and ELA proficiency at 40%. However, the focus is on student development and providing a well-rounded educational foundation.

The remote setting of Carbondale offers a unique community atmosphere for Ross Montessori School, fostering strong connections between families and educators.

What Parents Should Know

The student-teacher ratio at Ross Montessori School is 21.3:1, which is higher than the national average. This may mean larger class sizes, so parents should ask about classroom support, teaching assistants, and how the school differentiates instruction for students who need extra help.

Ross Montessori School is a charter school — a publicly funded school that operates with more autonomy than traditional district schools. Charter schools often have distinct educational models or specialties. Parents should understand the school's specific mission, enrollment process, and how its approach differs from nearby district options.

Score Breakdown

Full Profile · 3/3 metrics
Student Progress7.4Very Good50%
Year-over-year improvement in student test scores.
View breakdown
Years of Data4
Annual Change+0.3 pts/yr
Data Period2019–2025
TrendStable
Academics5.1Average30%
Student proficiency on state tests, adjusted for community poverty levels.
View breakdown
Math Proficiency30.7%
Reading/ELA Proficiency44.4%
Math vs. State Avg-5.4 pts
Reading vs. State Avg-0.5 pts
Overall Proficiency38%
Expected (poverty-adj.)62%
vs. Expected-24.8 pts
Adjusted Percentile33th
College ReadinessNot Available

Data not available for this school

Resources & Environment2.2Needs Improvement20%
Student-teacher ratio, per-pupil spending, and attendance.
View breakdown
Student-Teacher Ratio21.3:1
Per-Pupil Spending$10,869

Ross Montessori School — Students at Ross Montessori School score 38% proficient, which is below what's typical for similar communities (expected: 62%).

How we calculate scores →

Equity & Diversity

Shown separately, not included in overall score

Free/Reduced Lunch

0.2%

Students qualifying for federal meal assistance

Test Scores CO CMAS (2024-25)

Math Proficiency 25.3%
School
State
38.3%
ELA Proficiency 40.2%
School
State
44.9%

Based on 15 test records from CO state assessments. About our data

Proficiency Trend

→ Stable

Average proficiency (% at or above grade level) across Math & ELA over time.

2019
Math
22%
ELA
42%
2021*
Math
22%
ELA
42%
2022
Math
17%
2025
Math
28.3%
ELA
39.5%

* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.

Source: EdFacts (NCES) and state assessment data. Growth score: 7.4/10.

How Ross Montessori School Compares

See how Ross Montessori School performs across key quality dimensions compared to state benchmarks.

Overall Score
5.7/10
36th percentile in CO
Academic
5.1/10
5.1/10
Growth
7.4/10
Above average
Environment
2.2/10
Below average

Location

109 LEWIES LANE, Carbondale, CO 81623

Nearby Alternatives

Families considering Ross Montessori School may also want to explore other elementary schools in the area. Sopris Elementary School (rated 7.9/10, 9.6 miles away, in nearby Glenwood Springs), which scores notably higher. Another option is Glenwood Springs Elementary School (rated 7.5/10, 12.0 miles away, in nearby Glenwood Springs), which scores notably higher. Additionally, Two Rivers Community School (rated 6.9/10, 14.3 miles away, in nearby Glenwood Springs), which scores notably higher. For more schools in Carbondale, see our Carbondale schools guide .

Nearby Schools

20 within 22.4 mi
School Distance Rating
Bridges Carbondale 0.1 mi 5.6
Carbondale Middle School Carbondale 0.4 mi 6.9
Crystal River Elementary School Carbondale 0.4 mi 6.1
Roaring Fork High School Carbondale 0.7 mi 5.8
COLORADO ROCKY MOUNTAIN SCHOOL Carbondale 1.3 mi 7.3
Carbondale Community Charter School Carbondale 1.4 mi 4.2
WALDORF SCHOOL ON THE ROARING FORK Carbondale 3.9 mi 6.6
Riverview School Glenwood Springs 7.7 mi 5.5
CORNERSTONE CHRISTIAN SCHOOL Basalt 7.4 mi 7.5
Sopris Elementary School Glenwood Springs 9.6 mi 7.9
ST STEPHEN CATHOLIC SCHOOL Glenwood Springs 11.2 mi 6.6
Basalt High School Basalt 9.7 mi 8.4
Glenwood Springs High School Glenwood Springs 11.6 mi 7.5
Basalt Elementary School Basalt 9.8 mi 5.2
Basalt Middle School Basalt 10.0 mi 5.0
Glenwood Springs Elementary School Glenwood Springs 12.0 mi 7.5
Yampah Mountain School Glenwood Springs 12.4 mi 5.8
Glenwood Springs Middle School Glenwood Springs 14.0 mi 6.4
Two Rivers Community School Glenwood Springs 14.3 mi 6.9
Marble Charter School Marble 22.4 mi 6.5

Neighborhood Census ACS (2019-2023)

Census data for ZIP 81623 (ACS 2019-2023 5-Year Estimates) · Data sources

Median Income

$98,549

Median Home Value

$835,000

Median Rent

$2,094/mo

Population

16,349

College Educated

50.4%

Homeownership

68.1%

Avg Commute

28.8 min

Poverty Rate

11.3%

Median Age

40.6

Community Profile

The community surrounding Ross Montessori School has a median household income of $98,549. It is a well-educated community where 50% of adults hold a bachelor's degree or higher. The median home value in the area is $835,000, with a median rent of $2,094/month. The area has a poverty rate of 11.3%. The average commute for residents is 29 minutes. Source: U.S. Census ACS 2022 5-Year Estimates.

Similar Schools

Schools in the same state with comparable level, size, and ratings

School Rating
Bergen Meadow Primary School Evergreen, CO 5.7
CHRIST THE KING ROMAN CATHOLIC SCHOOL Denver, CO 5.7
Columbian Elementary School Denver, CO 5.7
Edith Teter Elementary School Fairplay, CO 5.7
Pioneer Elementary School Fort Morgan, CO 5.7
Ridgeview Elementary School Craig, CO 5.7

Frequently Asked Questions

Common questions about Ross Montessori School

What grades does Ross Montessori School serve?

Ross Montessori School serves students in grades Kindergarten through 8th.

How many students attend Ross Montessori School?

Ross Montessori School has an enrollment of approximately 213 students.

What is the student-teacher ratio at Ross Montessori School?

The student-teacher ratio at Ross Montessori School is 21.3:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.

How does Ross Montessori School rank in CO?

Ross Montessori School is ranked #1169 out of 1,815 schools in CO.

What is Ross Montessori School's MySchoolScout rating?

Ross Montessori School has a composite rating of 5.7 out of 10 on MySchoolScout. This score combines academic performance, student growth, and school environment into a single score. Equity data is shown separately for context.

What are the test scores at Ross Montessori School?

Based on the most recent state assessment data, Ross Montessori School has 25.3% math proficiency and 40.2% reading/ELA proficiency.

Is Ross Montessori School a charter school?

Yes, Ross Montessori School is a charter school. Charter schools are publicly funded but independently operated, often with more flexibility in curriculum and teaching methods.

Is Ross Montessori School a Title I school?

No, Ross Montessori School is not currently a Title I school.

11 schools nearby View map →

Neighborhood Context

City Safety
Elevated (780/100K)

FBI UCR 2024. City-level (Carbondale). Data >1 year old.

Quick Facts NCES CCD (SY 2022-23)

Grades
Kindergarten – 8th
Enrollment
213
Student-Teacher Ratio
21.3:1
Teachers (FTE)
10
Type
regular
Setting
Remote Town
County
Garfield County
Data Year
2023–2024

District

State Charter School Institute
District Enrollment
19,593
Schools in District
44
Per-Pupil Spending
$12,197
District Rank
#19 of 39

How We Rate Schools

Every school receives a composite score from 1 to 10 based on four pillars: Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Scores are built from publicly available data including standardized test results, enrollment figures, and school climate indicators.

Read our full methodology

Related reading

Get school insights in your inbox

New rankings, best-schools lists, and parent guides — delivered free. No spam, unsubscribe anytime.

We respect your privacy. Unsubscribe at any time.