Enrollment
34
Combined
DISTRICT 299 · STATE 523
SCHOOL COMMUNITY·GUNNISON WATERSHED SCHOOL DISTRICT RE1J·NCES 080447001507
Marble Charter School
412 WEST MAIN STREET, MARBLE, CO 81623 · (970) 963-9550 · Gunnison County
GRADES KG–10COMBINED43-RURALCHARTERREGULAR SCHOOL34 STUDENTS
B-
allk12 Grade
Scored higher than 53% of Colorado public K-12 schools
- B+Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- C-Beats 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 K-12 schools
Student : Teacher
11.4:1
3 FTE teachers
DISTRICT 33.2:1 · STATE 14.3:1
Free / Reduced Lunch
9%
3 students
DISTRICT 29% · STATE 50%
Community
0
0 members
Enrollment and student:teacher ratio compared against other combined schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Kindergarten | 5 | 15% |
| Grade 1 | 3 | 9% |
| Grade 2 | 7 | 21% |
| Grade 3 | 5 | 15% |
| Grade 4 | 1 | 3% |
| Grade 5 | 6 | 18% |
| Grade 6 | 3 | 9% |
| Grade 7 | 2 | 6% |
| Grade 8 | 2 | 6% |
Student demographics
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
68.4%
CO avg 44.9% . +18.4pp since 2023
Math
36.8%
CO avg 36.1% . +10.7pp since 2023
What this means: On the CMAS, Colorado's statewide test, about 68 of every 100 students at this school read and write at grade level and about 37 of 100 do math at grade level. Across all Colorado schools, those numbers are about 45 and 36. Reading and writing scores are up about 18 points since 2023, while math scores are up about 11 points.
CMAS results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 68.4% | 36.8% |
| 2023-24 | 50.0% | 26.1% |
% 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
UNDERPERFORMING
Bottom 10% of CO schools after controlling for student poverty
Actual proficiency
45.3%
composite math + reading, all grades
Predicted
61.4%
based on CO schools with similar FRL share
Beats by
-16.1pp
below demographic expectation
What this means: About 45% of students here test proficient in math and reading, below the roughly 61% typical for Colorado schools with a similar share of low-income students. BeatsExpectations compares each school with others at the same poverty level, not by raw scores, so a school lands here when its results trail those comparable schools, which is not the same as having low scores. A higher-scoring school can still fall in this tier if similar schools score higher still.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Where Marble Charter School ranks
Among K-12 schools| Measure | This school | In Colorado |
|---|---|---|
| Enrollment ranked largest first | 34 | #33 of 38 |
Ranked against other public K-12 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
34
-8 (-19%) vs 2020
+55% since 2000-01, when it was 22
Student : Teacher
11.4:1
was 42.0:1
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 | 34 | 3 | 11.4:1 | 9% (3) |
| 2023-24 | 45 | 3 | 14.8:1 | N/A |
| 2022-23 | 55 | 1.1 | 51.9:1 | N/A |
| 2020-21 | 42 | 1 | 42.0:1 | N/A |
| 2017-18 | 47 | 2 | 24.1:1 | 11% (5) |
| 2015-16 | 43 | 2 | 21.5:1 | 23% (10) |
| 2010-11 | 40 | 3 | 13.3:1 | 13% (5) |
| 2000-01 | 22 | 2 | 11.0:1 | 0% (0) |
Source: NCES Common Core of Data. Rows are the federal collections on file for Marble Charter School.
Since 2017-18: students down 28% (47 to 34); teachers up 52% (2 to 3).
About Marble Charter School
Marble Charter School is a small combined-grade school in MARBLE, Colorado, one of the schools in Gunnison Watershed School District Re1J. Students in kindergarten through 10 attend, and enrollment is 34 students. The school's enrollment is 93% smaller than the 523 average for combined schools in Colorado.
Gunnison Watershed School District Re1J serves 2,095 students across 7 schools.
About 97% of the student body at Marble Charter School is White. Beyond that, enrollment is 3% multiracial. In Gunnison County overall, about 87% of residents are White.
The school reports 3 full-time-equivalent teachers, which works out to about 11.4 students per teacher. The school has fewer students per teacher than the 14.3:1 average for combined schools in Colorado. The free or reduced-price lunch share, often used to gauge student poverty, is 9%. It compares with 33% for public schools in Gunnison County.
The allk12 Grade for Marble Charter School is B-. Compared with Colorado public K-12 schools, the school scored higher than 53% on a mix of test scores, poverty-adjusted results, and recent trend.
Schools in Colorado with a similar free or reduced-price lunch share are predicted to post an average proficiency rate on state tests near 61.4%. Marble Charter School posts 45.3%, 16.1 points below that, which places it in the bottom 10% statewide on BeatsExpectations.
Among Gunnison County residents, the median household income is $84,527, the share of adults with a bachelor's degree or higher is 65%, and roughly 6% of residents are in poverty. Besides Marble Charter School, Gunnison County has 6 other public schools.
The nearest other public school, Crested Butte Secondary School, is about 18.4 miles away. Of the 4 nearby schools with scores, including this one, Marble Charter School is 3rd on average proficiency.
Federal records code the school's setting as Rural: Remote. As a charter school, Marble Charter School is publicly funded and operates under a charter.
Enrollment at Marble Charter School dropped 19% between 2020-21 and 2024-25, from 42 to 34 students. Federal data show the ratio falling from 42.0:1 to 11.4:1.
Threads on this page can be about sports tryouts, band and choir, and theater. Anyone with firsthand experience at this school can post or comment.
Gunnison County at a glance
View full county profilePopulation
17,241
Census ACS
Median income
$84,527
Household, ACS
Bachelor's+
65%
Adults 25+
Poverty rate
6%
Below federal line
Schools in county
7
2,095 students
Quick facts
Related schools
Other schools in Gunnison Watershed School District Re1J
- Gunnison Elementary SchoolElementary · 560 students
- Gunnison High SchoolHigh · 410 students
- Crested Butte Secondary SchoolHigh · 400 students
- Gunnison Middle SchoolMiddle · 314 students
- Crested Butte Elementary SchoolElementary · 303 students
- Lake PreschoolElementary · 74 students
Nearby schools
- Crested Butte Secondary School18.4 mi · 400
- Crested Butte Elementary School18.4 mi · 303
- Aspen High School20.2 mi · 559
- Aspen Preschool20.2 mi · 27
- Aspen Middle School20.3 mi · 414
- Aspen Elementary School20.3 mi · 449
Frequently asked questions
About Marble Charter SchoolHow many students attend Marble Charter School?
Marble Charter School enrolls approximately 34 students in grades KG-10.
What grades does Marble Charter School serve?
Marble Charter School serves grades KG-10.
How many teachers does Marble Charter School have?
Marble Charter School employs 3 FTE teachers, for a student-to-teacher ratio of 11.4:1.
What is the student diversity at Marble Charter School?
Student demographics at Marble Charter School are roughly 97% White, 3% Two or more.
What district is Marble Charter School in?
Marble Charter School is part of Gunnison Watershed School District Re1J.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.