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Average

#1335 of 1,815 schools in CO

Marble Charter School

School · Gunnison Watershed School District Re1J

412 WEST MAIN STREET, Marble, CO 81623

Charter

Enrollment

45

Student-Teacher

15:1

Score

5.0

Grades

Kindergarten – 10th

Data vintage2022-23

How this school compares

Colorado schools

#1,335 of 1,815

In district

#6 of 7

Gunnison Watershed School District Re1J

Academic growth

7.3 / 10

Very Good

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Marble Charter School

5.0/10

School in Marble · grades Kindergarten – 10th. Start here, then compare fit against nearby and district options.

Crested Butte Secondary School

6.9/10

18.4 mi away. Use as a geographic alternative in the same move search.

Crested Butte Elementary School

8.5/10

18.4 mi away. Use as a geographic alternative in the same move search.

About Marble Charter School

Marble Charter School is a public school in Marble, CO, part of Gunnison Watershed School District Re1J. Marble Charter School serves approximately 45 students, and covers grades Kindergarten-10th, and has a 15:1 student-teacher ratio. Marble Charter School has a current MySchoolScout rating of 5.0 out of 10 and ranks #1,335 of 1,815 schools in CO.

Structured state assessment records for Marble Charter School show 52% math proficiency (multi-year average, 2009-2025) and 63% reading/ELA proficiency (multi-year average, 2009-2025).

How it compares1.0 pts below district
  • This school 5.0 · Average
  • District avg 6.0
  • CO avg 6.2

What Parents Should Know

At 45 students, Marble Charter School is on the smaller side. That usually buys more individual attention and teachers who know every kid by name, with the trade-off of fewer electives and extracurriculars than a larger school can staff. Ask what activities it actually offers.

Marble Charter School is a charter school: publicly funded, but run with more independence than a traditional district school. Many charters are built around a specific model or focus, so it's worth understanding this one's mission, how enrollment works, and how it differs from the district schools nearby.

Marble Charter School sits in a rural area, which can mean longer drives for some families. Rural schools are often community anchors with smaller classes, but check transportation, after-school options, and access to specialized services before you commit.

Score Breakdown

Full Profile · 4/4 metrics
Student Progress7.3Very Good25%
Year-over-year improvement in student test scores.
View breakdown
Years of Data15
Annual Change-2.98 pts/yr
Data Period2009–2025
TrendDeclining
Academics6.7Average25%
Student proficiency on state tests, adjusted for community poverty levels.
View breakdown
Math Proficiency36.8% (2025 CMAS)
Reading/ELA Proficiency68.4% (2025 CMAS)
Math vs. State Avg+0.7 pts
Reading vs. State Avg+23.5 pts
Overall Proficiency53% (2025 CMAS, Math+ELA)
Expected (poverty-adj.)62% (model expectation from 2025 CMAS)
vs. Expected-9.6 pts
Adjusted Percentile52th
College Readiness2.7Needs Improvement30%
Graduation rates, AP course participation, and IB availability.
View breakdown
IB ProgramNo
Resources & Environment3.3Needs Improvement20%
Student-teacher ratio, per-pupil spending, and attendance.
View breakdown
Student-Teacher Ratio15:1
Per-Pupil Spending$14,480
Chronic Absenteeism66.7%

Marble Charter School — Students at Marble Charter School score 53% proficient, which is below what's typical for similar communities (expected: 62%).

How we calculate scores →

Test Scores CO CMAS (2024-25)

Math Proficiency 51.6% (multi-year average, 2009-2025)
School
State
36.1% (2025 CMAS)
ELA Proficiency 63.1% (multi-year average, 2009-2025)
School
State
44.9% (2025 CMAS)

Based on 29 test records from CO state assessments. About our data

Proficiency Trend

↓ Declining

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

2009
Math
90%
ELA
90%
2010
Math
90%
ELA
90%
2011
Math
90%
ELA
69.5%
2012
Math
69.5%
ELA
90%
2013
Math
69.5%
ELA
69.5%
2014
Math
30%
ELA
49.5%
2015
Math
30%
ELA
49.5%
2016
Math
30%
ELA
49.5%
2017
Math
49.5%
ELA
69.5%
2018
Math
49.5%
ELA
69.5%
2019
Math
49.5%
ELA
69.5%
2020*
Math
30%
ELA
24.5%
2021*
Math
30%
ELA
25%
2022
Math
30%
2025
Math
36.8%
ELA
68.4%

* 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: 7.3/10.

How Marble Charter School Compares

See how Marble Charter School performs across key quality dimensions compared to state benchmarks.

Overall Score
5.0/10
27th percentile in CO
Academic
6.7/10
Average
Growth
7.3/10
Very Good
Environment
3.3/10
Needs Improvement

Funding & Resources

Teaching Staff
15:1 student-teacher ratio
3 teachers
Chronic Absenteeism
Students missing 15+ days per year (SY 2022-23)
66.7%

Location

412 WEST MAIN STREET, Marble, CO 81623

Nearby Alternatives

Families considering Marble Charter School may also want to explore other schools in the area. Crested Butte Elementary School (rated 8.5/10, 18.4 miles away, in nearby Crested Butte), which scores notably higher. Another option is Aspen High School (rated 8.4/10, 20.2 miles away, in nearby Aspen), which scores notably higher. Additionally, Carbondale Middle School (rated 8.1/10, 22.2 miles away, in nearby Carbondale), which scores notably higher. For more schools in Marble, see our Marble schools guide .

Nearby Schools

20 within 22.3 mi
School Distance Rating
Crested Butte Secondary School Crested Butte 18.4 mi 6.9
Crested Butte Elementary School Crested Butte 18.4 mi 8.5
Roaring Fork High School Carbondale 21.9 mi 7.2
Carbondale Middle School Carbondale 22.2 mi 8.1
Crystal River Elementary School Carbondale 22.3 mi 5.0
Basalt High School Basalt 21.3 mi 7.7
Ross Montessori School Carbondale 22.4 mi 3.3
Bridges Carbondale 22.5 mi 7.3
CORNERSTONE CHRISTIAN SCHOOL Basalt 22.0 mi 7.5
Basalt Elementary School Basalt 22.1 mi 4.0
Basalt Middle School Basalt 22.1 mi 5.1
WALDORF SCHOOL ON THE ROARING FORK Carbondale 23.2 mi 6.6
COLORADO ROCKY MOUNTAIN SCHOOL Carbondale 23.4 mi 7.3
Carbondale Community Charter School Carbondale 23.6 mi 4.8
Aspen High School Aspen 20.2 mi 8.4
Aspen Preschool Aspen 20.2 mi
Aspen Middle School Aspen 20.3 mi 5.3
Aspen Elementary School Aspen 20.3 mi 4.4
ASPEN COUNTRY DAY SCHOOL Aspen 20.3 mi 6.1
Aspen Community Charter School Woody Creek 22.3 mi 6.7

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

Similar Schools

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

School Rating
BRIGHTON ADVENTIST ACADEMY Brighton, CO 5.2
PUEBLO WEST CHRISTIAN ACADEMY Pueblo, CO 4.7
Prairie Vista Youth Service Center Brighton, CO 5.4
SIERRA SCHOOL OF MAIN STREET Longmont, CO 5.7
LIGHTHOUSE CHRISTIAN ACADEMY Cortez, CO 5.9
THE LIBERTY SCHOOL Durango, CO 5.9

Frequently Asked Questions

Common questions about Marble Charter School

What grades does Marble Charter School serve?

Marble Charter School serves students in grades Kindergarten through 10th.

How many students attend Marble Charter School?

Marble Charter School has an enrollment of approximately 45 students.

What is the student-teacher ratio at Marble Charter School?

The student-teacher ratio at Marble Charter School is 15:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.

How does Marble Charter School rank in CO?

Marble Charter School ranks #1,335 of 1,815 schools in CO.

What is Marble Charter School's MySchoolScout rating?

Marble Charter School has a current MySchoolScout rating of 5.0 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.

What are the test scores at Marble Charter School?

Based on loaded state assessment records, Marble Charter School has 52% math proficiency (multi-year average, 2009-2025) and 63% reading/ELA proficiency (multi-year average, 2009-2025).

Is Marble Charter School a charter school?

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

Is Marble Charter School a Title I school?

No, Marble Charter School is not currently a Title I school.

11 schools nearby View map →

Neighborhood Context

Walk Score
18 Car-Dependent
Bike Score
13 Somewhat Bikeable

Powered by Walk Score

Quick Facts NCES CCD (SY 2022-23)

Grades
Kindergarten – 10th
Enrollment
45
Student-Teacher Ratio
15:1
Teachers (FTE)
3
Type
regular
Setting
Remote Rural
County
Gunnison County
Chronic Absenteeism (SY 2022-23)
66.7%

How we rate schools

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