Enrollment
367
Elementary
DISTRICT 404 · STATE 379
SCHOOL COMMUNITY·JEFFERSON COUNTY SCHOOL DISTRICT NO. R-1·NCES 080480001546
Mount Carbon Elementary School
12776 WEST CROSS AVENUE, LITTLETON, CO 80127 · (303) 982-7900 · Jefferson County
GRADES PK–05ELEMENTARY21-SUBURBREGULAR SCHOOL367 STUDENTS
Student : Teacher
15.6:1
24 FTE teachers
DISTRICT 15.9:1 · STATE 16.6:1
Free / Reduced Lunch
20%
72 students
DISTRICT 35% · 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 | 74 | 20% |
| Kindergarten | 38 | 10% |
| Grade 1 | 45 | 12% |
| Grade 2 | 55 | 15% |
| Grade 3 | 45 | 12% |
| Grade 4 | 56 | 15% |
| Grade 5 | 54 | 15% |
Student demographics
50%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 52% · 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
QUIET COMMUNITY
Be the first to start a discussion at Mount Carbon Elementary School.
START A DISCUSSIONTest scores
CMAS 2024-25 . % Met or Exceeded ExpectationsEnglish Language Arts
56.1%
CO avg 44.9% . +2.3pp since 2023
Math
52.7%
CO avg 36.1% . +6.5pp since 2023
What this means: On the CMAS, Colorado's statewide test, about 56 of every 100 students at this school read and write at grade level and about 53 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 2 points since 2023, while math scores are up about 7 points.
CMAS results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 56.1% | 52.7% |
| 2023-24 | 53.8% | 46.2% |
% 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
50.1%
composite math + reading, all grades
Predicted
54.8%
based on CO schools with similar FRL share
Beats by
-4.8pp
below demographic expectation
What this means: About 50% of students here test proficient in math and reading, compared with the roughly 55% 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 →
Where Mount Carbon Elementary School ranks
Among elementary schools| Measure | This school | In Colorado | In Jefferson County |
|---|---|---|---|
| State test proficiency ranked highest first | 50.1% | #292 of 931 | #42 of 82 |
| Math proficiency ranked highest first | 52.7% | #233 of 940 | #33 of 85 |
| Reading proficiency ranked highest first | 56.1% | #277 of 946 | #40 of 85 |
| Enrollment ranked largest first | 367 | #524 of 1,056 | #47 of 89 |
| Students per teacher ranked fewest first | 15.6:1 | #471 of 896 | #37 of 86 |
| Diversity index ranked most diverse first | 49.8% | #454 of 896 | #29 of 86 |
| Free and reduced lunch ranked highest share first | 19.6% | #836 of 983 | #57 of 85 |
| Enrollment change since 2017-18 ranked steepest decline first | -25.3% | #188 of 664 | #14 of 62 |
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.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
367
-13 (-3%) vs 2020
-38% since 2000-01, when it was 593
Student : Teacher
15.6:1
was 19.0:1
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 | 367 | 23.5 | 15.6:1 | 20% (72) |
| 2023-24 | 380 | 22.9 | 16.6:1 | 26% (99) |
| 2022-23 | 393 | 21.6 | 18.2:1 | 24% (95) |
| 2020-21 | 380 | 20 | 19.0:1 | 22% (83) |
| 2017-18 | 491 | 19.7 | 24.9:1 | 21% (105) |
| 2015-16 | 471 | 18 | 26.2:1 | 14% (67) |
| 2010-11 | 413 | 23 | 18.0:1 | 13% (55) |
| 2000-01 | 593 | 27 | 22.0:1 | 2% (9) |
Source: NCES Common Core of Data. Rows are the federal collections on file for Mount Carbon Elementary School.
About Mount Carbon Elementary School
At 12776 WEST CROSS AVENUE in LITTLETON, Colorado, Mount Carbon Elementary School operates as a medium-sized elementary school. The school had 367 students in pre-K through 5 in 2024-25.
A total of 148 schools make up Jefferson County School District No. R-1, with 74,935 students enrolled.
White students make up a majority at Mount Carbon Elementary School, at 66%. Other students are 23% Hispanic, 6% multiracial, and 3% Asian. That is lower than the 80% White share among all Jefferson County residents. Pick two students at random and there is a 50% chance they belong to different racial or ethnic groups; that figure is the school's diversity index.
The school has about 15.6 students per teacher and 23.5 full-time-equivalent teachers. This ratio sits 1.0 below the 16.6:1 average for elementary schools in Colorado. Federal records put free or reduced-price lunch eligibility at 20%. That is lower than the 32% average for public schools in Jefferson County.
The school's average proficiency rate on state tests is 50.1%. For its free or reduced-price lunch share, the predicted value is 54.8%.
Among Jefferson County residents, the median household income is $110,656, roughly 52% of adults have a four-year degree or more, and the share of residents below the poverty line is 4%. Mount Carbon Elementary School is one of 168 public schools in the county.
The closest public school to Mount Carbon Elementary School is Dakota Ridge Senior High School, about 0.8 miles away. Mount Carbon Elementary School is one of several public schools in the area, with at least 8 others within five miles. The school's 50.1% average proficiency ranks 4th among 9 nearby schools.
Locale: Suburb: Large. In NCES terms, the school is in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.
Enrollment dropped 3% from its 2020-21 level of 380. Its ratio of students to teachers was 19.0:1 in 2020-21, and 15.6:1 in 2024-25.
Families, students, and staff can use this page to discuss school safety, transportation, and start times at Mount Carbon Elementary School. Alumni can share how the school prepared them.
Jefferson County at a glance
View full county profilePopulation
579,377
Census ACS
Median income
$110,656
Household, ACS
Bachelor's+
52%
Adults 25+
Poverty rate
4%
Below federal line
Schools in county
168
74,739 students
Quick facts
Related schools
Other schools in Jefferson County School District No. R-1
- Arvada West High SchoolHigh · 1,923 students
- Ralston Valley Senior High SchoolHigh · 1,875 students
- Chatfield High SchoolHigh · 1,808 students
- Lakewood High SchoolHigh · 1,735 students
- Columbine High SchoolHigh · 1,710 students
- Golden High SchoolHigh · 1,469 students
Other schools in LITTLETON
- Chatfield High SchoolHigh · 1,808 students
- Heritage High SchoolHigh · 1,748 students
- Columbine High SchoolHigh · 1,710 students
- Dakota Ridge Senior High SchoolHigh · 1,277 students
- Littleton High SchoolHigh · 1,187 students
- Rocky Heights Middle SchoolMiddle · 1,129 students
Nearby schools
- Dakota Ridge Senior High School0.8 mi · 1,277
- Powderhorn Elementary School0.8 mi · 522
- Summit Ridge Middle School0.9 mi · 851
- Kendallvue Elementary School1.2 mi · 370
- Westridge Elementary School1.3 mi · 400
- Montessori Peaks Charter Academy1.9 mi · 444
Frequently asked questions
About Mount Carbon Elementary SchoolWhat is the total enrollment at Mount Carbon Elementary School?
Mount Carbon Elementary School enrolls approximately 367 students in grades PK-05.
What grades does Mount Carbon Elementary School serve?
Mount Carbon Elementary School serves grades PK-05.
How many students per teacher at Mount Carbon Elementary School?
Approximately 15.6:1 students per teacher at Mount Carbon Elementary School.
How diverse is Mount Carbon Elementary School?
Mount Carbon Elementary School reports a student body of 66% White, 23% Hispanic, 1% Black, 3% Asian, 6% Two or more.
Who oversees Mount Carbon Elementary School?
Mount Carbon Elementary School is overseen by Jefferson County School District No. R-1 in Jefferson County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.