Enrollment
598
Colorado · 2024-25 NCES data
Middle school (grades 6-8) · Boulder, CO
Centennial Middle School
Federal NCES profile for Centennial Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 44/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 080249000108
👥 S:T ratio 28
🌟 Gifted program 70
🎓 Counselors 40
📋 Attendance 40
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Centennial Middle School earns 44/100 on the Resource Investment Index, with class sizes larger than 73% of Colorado schools.
- #5 of 6
- middle schools in Boulder · Resource Index
- 44
- Resource Index · Typical
- 18.1:1
- large classes for Colorado
- 25.0%
- free-lunch eligible
Centennial Middle School has class sizes larger than 73% of Colorado schools. Computed live against every Colorado school reporting to NCES.
By Resource Investment Index, Centennial Middle School ranks #5 of 6 middle schools in Boulder, CO.
School address
District: Boulder Valley School District No. Re2 · Colorado
NCES ID 080249000108 Verify on NCES CCD record →
Teachers (FTE)
33.0
Federal CCD staff survey
Students per teacher
18.1:1
vs 16.6:1 Colorado avg
+9% vs state
Free-lunch eligible
25.0%
vs 38.5% Colorado avg
-35% vs state
Student-teacher ratio in context
How Centennial Middle School compares with Colorado and U.S. medians
What stands out at Centennial Middle School
Centennial Middle School is a mid-sized middle school in Boulder, Colorado, enrolling 598 students.
Class loads run somewhat heavier than typical: 18.1:1 puts it in the larger third of Colorado schools by student-teacher ratio.
Economic need runs somewhat below the state's typical profile, with 25.0% of students eligible for free meals.
Enrollment of 598 puts it in the larger third of Colorado schools by headcount.
Its Resource Investment Index sits near the middle of the pack among 1,922 scored Colorado schools.
Against 318 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #117.
Its student body is led by White (64%) and Hispanic or Latino (29%) (diversity index 51/100).
Counselor coverage runs a bit thin, about 299 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
Attendance runs somewhat below the norm, with 24.2% of students chronically absent per the 2021-22 civil-rights collection.
Boulder Valley School District No. Re2 also operates Boulder High School (1,939 students) and Fairview High School (1,863 students) alongside Centennial Middle School.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Centennial Middle School compares
Centennial Middle School on the metrics families compare, against Colorado and U.S. means.
| Metric | This school | vs Colorado | Colorado avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 18.1:1 | ▲ 9% | 16.6:1 | 15.7:1 |
| Free-lunch eligible | 25.0% | ▼ 35% | 38.5% | 51.7% |
| Enrollment | 598 | top 19% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
18.1:1
Leaner classes than 24% of US schools, heavier class loads than most.
598
Bigger than 72% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
25.0%
free-lunch eligible
- 35% below the Colorado average of 38.5%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
18.1:1
students per teacher
- 9% above state mean
Top 73% in Colorado - lower ratio than 27% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
24.2%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$15,316
per pupil, district-wide
- below Colorado avg of $16,273
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors2.0 FTE
Per 299 students, the combined health-and-guidance staffing load for this school.
Discipline context
12
in-school suspensions + 21 out-of-school
Suspension rate: 2.0 per 100 students. Combined in-school and out-of-school rate: 5.5 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
White 63.6%
Hispanic or Latino 28.9%
Two or More 4.4%
Asian 1.8%
African American 1.2%
American Indian / Alaska Native 0.2%
Largest group: White at 63.6% of enrollment.
Student-body diversity index 51.0/100
Simpson diversity index - at 51.0, Centennial Middle School is more mixed than the Colorado school average of 47.1.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Boulder Valley School District No. Re2, which includes Centennial Middle School.
$15,316
Per student
-6%
vs Colorado
Avg $16,273
-8%
vs U.S.
Avg $16,593
Revenue mix
Local 80.6%
State 13.3%
Federal 6.1%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Centennial Middle School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Boulder High School | Larger | Similar economic need | Similar S:T ratio |
| Fairview High School | Larger | Lower economic need | Higher S:T ratio |
| Broomfield High School | Larger | Lower economic need | Higher S:T ratio |
| Centaurus High School | Larger | Similar economic need | Similar S:T ratio |
| Peak to Peak Charter School | Larger | Lower economic need | Similar S:T ratio |
Comparisons are relative to Centennial Middle School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,939
- Students per teacher
- 19:1
- Resource Index
- 34/100
- Enrollment
- 1,863
- Students per teacher
- 21.4:1
- Resource Index
- 46/100
- Enrollment
- 1,693
- Students per teacher
- 21.4:1
- Resource Index
- 38/100
- Enrollment
- 1,557
- Students per teacher
- 19.2:1
- Resource Index
- 30/100
- Enrollment
- 1,447
- Students per teacher
- 19.3:1
- Resource Index
- 54/100
Similar middle schools statewide
Matched by enrollment size and by staffing ratio across all of Colorado, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~598 students)
Similar student-teacher ratio (~18.1:1)
Next steps
Verify locally before acting on Centennial Middle School's federal record.
- Compare Centennial Middle School against another school. Compare schools
- Boulder Valley School District No. Re2's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Centennial Middle School
How many students attend Centennial Middle School?
Centennial Middle School has 598 students enrolled. It is a middle school in Boulder, CO.
What is the student-teacher ratio at Centennial Middle School?
The student-teacher ratio at Centennial Middle School is 18.1:1, which is 9% higher than the Colorado average of 16.6:1 and 15% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Centennial Middle School?
25.0% of students at Centennial Middle School are eligible for free lunch, compared to the Colorado average of 38.5%.
What is the racial and ethnic makeup of Centennial Middle School?
The largest demographic group at Centennial Middle School is White at 63.6% of enrollment, in Boulder, CO. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 51.0/100.
What is the Resource Investment Index for Centennial Middle School?
Centennial Middle School has a Resource Investment Index of 44/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Centennial Middle School rank among middle schools in Boulder?
By Resource Investment Index, Centennial Middle School ranks #5 of 6 middle schools in Boulder, CO. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all middle schools in Boulder on the city page.
Is Centennial Middle School a good school?
Centennial Middle School earns 44/100 on the Resource Investment Index, with class sizes larger than 73% of Colorado schools. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Boulder Valley School District No. Re2?
Besides Centennial Middle School, Boulder Valley School District No. Re2 also operates Boulder High School (1,939 students), Fairview High School (1,863 students), and Broomfield High School (1,693 students). See the Boulder Valley School District No. Re2 district page for the complete list.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.