1
Enrollment
715
Middle
DISTRICT 566 · STATE 462
SCHOOL COMMUNITY·ST. VRAIN VALLEY SCHOOL DISTRICT NO. RE1J·NCES 080537001886
Altona Middle School
4600 CLOVER BASIN DRIVE, LONGMONT, CO 80503 · (720) 494-3980 · Boulder County
GRADES 06–08MIDDLE22-SUBURBREGULAR SCHOOL715 STUDENTS
A+
allk12 Grade
Scored higher than 97% of Colorado public middle schools
- A+Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- A+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 middle schools
Student : Teacher
18.5:1
39 FTE teachers
DISTRICT 16.8:1 · STATE 15.9:1
Free / Reduced Lunch
23%
168 students
DISTRICT 39% · STATE 50%
Community
6
0 members
Enrollment and student:teacher ratio compared against other middle schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 6 | 235 | 33% |
| Grade 7 | 241 | 34% |
| Grade 8 | 239 | 33% |
Student demographics
48%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 55% · 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
Test scores
CMAS 2024-25 . % Met or Exceeded ExpectationsEnglish Language Arts
71.9%
CO avg 44.9% . -2.9pp since 2023
Math
65.6%
CO avg 36.1% . +1.5pp since 2023
What this means: On the CMAS, Colorado's statewide test, about 72 of every 100 students at this school read and write at grade level and about 66 of 100 do math at grade level. Across all Colorado schools, those numbers are about 45 and 36. Reading and writing scores are down about 3 points since 2023, while math scores are up about 2 points.
CMAS results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 71.9% | 65.6% |
| 2023-24 | 74.8% | 64.1% |
% 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
OUTPERFORMING
Top 10% of CO schools after controlling for student poverty
Actual proficiency
68.4%
composite math + reading, all grades
Predicted
52.5%
based on CO schools with similar FRL share
Beats by
+15.9pp
above demographic expectation
What this means: About 68% of students here test proficient in math and reading, well above the roughly 52% typical for Colorado schools with a similar share of low-income students. BeatsExpectations ranks schools against others at the same poverty level, not by raw scores, so a school can post high scores and still fall short of its prediction, or post lower scores and still beat it. This school clears its prediction by about 16 points, placing it in Colorado's top 10%.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Schools most like Altona Middle School
Altona Middle School's state test result (68.4% proficient) is higher than 4 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Altona Middle School this school | 715 | 23.5% | 68.4% |
| Kinard Core Knowledge Middle School FORT COLLINS | 762 | 11.8% | 75.8% |
| Rocky Top Middle School THORNTON | 1,052 | 27.6% | 52.8% |
| Discovery Canyon Campus Middle School COLORADO SPRINGS | 821 | 18.1% | 64.4% |
| Rocky Heights Middle School LITTLETON | 1,129 | 10.3% | 68.4% |
| Challenger Middle School COLORADO SPRINGS | 696 | 16.8% | 65.3% |
Matched among Colorado middle schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where Altona Middle School ranks
Among middle schools| Measure | This school | In Colorado | In Boulder County |
|---|---|---|---|
| State test proficiency ranked highest first | 68.4% | #7 of 241 | #3 of 13 |
| Math proficiency ranked highest first | 65.6% | #7 of 244 ▲ 1 | #3 of 13 no change |
| Reading proficiency ranked highest first | 71.9% | #14 of 246 ▼ 4 | #3 of 13 no change |
| Enrollment ranked largest first | 715 | #53 of 278 | #1 of 13 |
| Students per teacher ranked fewest first | 18.5:1 | #188 of 227 | #10 of 13 |
| Diversity index ranked most diverse first | 48.4% | #132 of 227 | #8 of 13 |
| Free and reduced lunch ranked highest share first | 23.5% | #212 of 246 | #9 of 13 |
| Enrollment change since 2017-18 ranked steepest decline first | -11.0% | #112 of 169 | #7 of 12 |
Ranked against other public middle 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
715
-79 (-10%) vs 2020
+11% since 2010-11, when it was 643
Student : Teacher
18.5:1
was 20.9:1
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 | 715 | 38.6 | 18.5:1 | 23% (168) |
| 2023-24 | 741 | 40.1 | 18.5:1 | 20% (148) |
| 2022-23 | 770 | 39.6 | 19.4:1 | 21% (165) |
| 2020-21 | 794 | 38 | 20.9:1 | 19% (154) |
| 2017-18 | 803 | 39.8 | 20.2:1 | 17% (139) |
| 2015-16 | 808 | 38 | 21.3:1 | 17% (138) |
| 2010-11 | 643 | 33 | 19.5:1 | 15% (98) |
Source: NCES Common Core of Data. Rows are the federal collections on file for Altona Middle School.
Since 2017-18: students down 11% (803 to 715); teachers down 3% (39.8 to 38.6).
About Altona Middle School
Altona Middle School is a middle school located in LONGMONT, Colorado, in Boulder County. It reported 715 students in grades 6 through 8 in 2024-25. That compares with an average of about 462 students for middle schools in Colorado.
St. Vrain Valley School District No. Re1J has 54 schools and 31,607 students, and Altona Middle School is one of those schools.
At Altona Middle School, 69% of students are White. The remaining students are 15% Hispanic, 10% Asian, and 5% multiracial. Census figures show Boulder County is about 78% White. Measured by the diversity index, the student body scores 48%.
Altona Middle School has 38.6 full-time-equivalent teachers on staff and a student-to-teacher ratio of 18.5:1. The school's 18.5:1 compares with an average of 15.9:1 for middle schools in Colorado. The school has 23% of students eligible for free or reduced-price lunch. That is lower than the 33% average for public schools in Boulder County.
Altona Middle School holds an A+ allk12 Grade, placing it above 97% of Colorado public middle schools.
When test results are adjusted for free or reduced-price lunch eligibility, Altona Middle School ranks in the top 10% of Colorado schools. It scores 68.4%; the prediction is 52.5%.
Looking at the county, Boulder County, median household income comes to about $103,994, a bachelor's degree or higher is held by about 64% of adults, and the poverty rate is about 4%. The county has 86 public schools and about 42,200 students.
A public school about 0.1 miles away, Eagle Crest Elementary School, is the closest to Altona Middle School. In all, at least 8 other public schools sit within five miles of Altona Middle School. In a group of 7 nearby schools with scores, Altona Middle School ranks 2nd on average proficiency.
By NCES locale, the school is Suburb: Mid-size, or in a suburban area outside a principal city, within an urbanized area with a population between 100,000 and 250,000.
From 794 students in 2020-21, enrollment decreased to 715 by 2024-25. The school's ratio dropped from 20.9:1 to 18.5:1 between 2020-21 and 2024-25.
This page collects posts and questions about Altona Middle School, such as open houses, carpools, and field trips. Current and former families are welcome to add their experience.
Boulder County at a glance
View full county profilePopulation
328,961
Census ACS
Median income
$103,994
Household, ACS
Bachelor's+
64%
Adults 25+
Poverty rate
4%
Below federal line
Schools in county
86
42,200 students
Quick facts
Related schools
Other schools in St. Vrain Valley School District No. Re1J
- Erie High SchoolHigh · 1,727 students
- Niwot High SchoolHigh · 1,509 students
- Frederick Senior High SchoolHigh · 1,491 students
- Longmont High SchoolHigh · 1,268 students
- Soaring Heights PK-8Elementary · 1,211 students
- Silver Creek High SchoolHigh · 1,208 students
Other schools in LONGMONT
- Longmont High SchoolHigh · 1,268 students
- Silver Creek High SchoolHigh · 1,208 students
- Mead High SchoolHigh · 1,174 students
- Skyline High SchoolHigh · 1,082 students
- Twin Peaks Classical AcademyCombined · 879 students
- Timberline PK-8Elementary · 762 students
Nearby schools
- Eagle Crest Elementary School0.1 mi · 421
- Silver Creek High School0.5 mi · 1,208
- Blue Mountain Elementary0.6 mi · 542
- Flagstaff Charter Academy1.9 mi · 725
- New Meridian High School2.2 mi · 95
- St. Vrain Virtual High School2.2 mi · 69
Frequently asked questions
About Altona Middle SchoolWhat is the total enrollment at Altona Middle School?
Altona Middle School enrolls approximately 715 students in grades 06-08.
What age range does Altona Middle School serve?
Altona Middle School serves students from grade 06 through grade 08.
What is the student-teacher ratio at Altona Middle School?
The student-to-teacher ratio at Altona Middle School is approximately 18.5:1 (39 FTE teachers).
What is the racial breakdown of students at Altona Middle School?
At Altona Middle School, the student body is approximately 69% White, 15% Hispanic, 1% Black, 10% Asian, 5% Two or more.
Is Altona Middle School public or private?
Altona Middle School is a public K-12 school, overseen by St. Vrain Valley School District No. Re1J.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.