Serving 34 students in grades Kindergarten-10, Marble Charter School ranks in the top 30% of all schools in Colorado for overall test scores (math proficiency is top 50%, and reading proficiency is top 50%).
The percentage of students achieving proficiency in math is 21-39% (which is approximately equal to the Colorado state average of 33%). The percentage of students achieving proficiency in reading/language arts is 60-79% (which is higher than the Colorado state average of 45%).
The student-teacher ratio of 11:1 is lower than the Colorado state level of 15:1.
Minority enrollment is 3% of the student body (majority Black and Hispanic), which is lower than the Colorado state average of 51% (majority Hispanic).
Quick Facts (2026)
- School Type: Charter School
- Grades: Kindergarten-10
- Enrollment: 34 students
- Student-Teacher Ratio: 11:1
- Minority Enrollment: 3%
- Overall Testing Rank: Top 30% in CO
- Math Proficiency: 21-39% (Top 50%)
- Reading Proficiency: 60-79% (Top 10%)
- Source: National Center for Education Statistics (NCES), CO Dept. of Education
Top Rankings
Marble Charter School ranks among the top 20% of public schools in Colorado for:
Category
Attribute
Most improved public schools
Reading/Language Arts Proficiency
School Overview
Marble Charter School's student population of 34 students has declined by 19% over five school years.
The teacher population of 3 teachers has grown by 200% over five school years.
School Type
Grades Offered
Grades Kindergarten-10
(No virtual instruction)
(No virtual instruction)
Total Students
34 students
Total Classroom Teachers
3 teachers
School Calendar
School Motto
MCS is a small school with a big heart.
School Rankings
Marble Charter School ranks within the top 30% of all 1,748 schools in Colorado (based off of combined math and reading proficiency testing data).
The diversity score of Marble Charter School is 0.06, which is less than the diversity score at state average of 0.63. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#519 out of 1748 schools
(Top 30%)
(Top 30%)
Math Test Scores (% Proficient)
21-39%
33%
Reading/Language Arts Test Scores (% Proficient)
60-79%
45%
Student-Teacher Ratio
11:1
15:1
American Indian
n/a
1%
Asian
n/a
3%
Hispanic
n/a
37%
Black
n/a
5%
White
97%
49%
Hawaiian
n/a
n/a
Two or more races
3%
5%
All Ethnic Groups
Chronically Absent Students
(22-23)88.2%
33.6%
Eligible for Free Lunch
9%
39%
Eligible for Reduced Lunch
4%
6%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CO Dept. of Education
Frequently Asked Questions
What is Marble Charter School's ranking?
Marble Charter School is ranked #519 out of 1,748 schools, which ranks it among the top 30% of public schools in Colorado.
What schools are Marble Charter School often compared to?
Marble Charter Schoolis often viewed alongside schools like Crested Butte Elementary School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
21-39% of students have achieved math proficiency (compared to the 33% CO state average), while 60-79% of students have achieved reading proficiency (compared to the 45% CO state average).
How many students attend Marble Charter School?
34 students attend Marble Charter School.
What is the racial composition of the student body?
97% of Marble Charter School students are White, and 3% of students are Two or more races.
What is the student-teacher ratio of Marble Charter School?
Marble Charter School has a student ration of 11:1, which is lower than the Colorado state average of 15:1.
What grades does Marble Charter School offer ?
Marble Charter School offers enrollment in grades Kindergarten-10 (No virtual instruction).
What school district is Marble Charter School part of?
Marble Charter School is part of Gunnison Watershed School District Re1j.
School Reviews
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