- Enrollment
- 1,939
- Students per teacher
- 19:1
- Resource Index
- 34/100
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 →
CCD year-over-year · 2022-23 → 2023-24
+52 students YoY
Centennial Middle School grew from 567 students in 2022-23 to 619 in 2023-24 (+9.2%).
Teacher FTE lost 33.3 → 32.4 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Growing CCD campus
+52 students YoY 080249000108 · Boulder, CO Middle · MID · TRAD
598 enr · 18.1:1 · 25.0% lunch · RII 44
Nearest enrollment peer: Boulder High School (1,939 students)
Centennial Middle School grew from 567 students in 2022-23 to 619 in 2023-24 (+9.2%). Teacher FTE lost 33.3 → 32.4 across the same CCD years. Read with this school → · District book → · Colorado schools → · Find another →
Centennial Middle School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Boulder High S
Boulder High School
1,939 students
- Fairview High
Fairview High School
1,863 students
- Broomfield Hig
Broomfield High School
1,693 students
- Centaurus High
Centaurus High School
1,557 students
- Peak to Peak C
Peak to Peak Charter School
1,447 students
- This school 598
Centennial Middle School
598 students
What this shows Centennial Middle School reports 598 students on the CCD universe file.
How Centennial Middle School compares
Centennial Middle School is a growing campus on CCD: ratios and free-lunch share vs 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 methodology
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
$17,172
per pupil, district-wide
- below Colorado avg of $17,910
Close to the U.S. public-school average per-pupil spend.
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.
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
District finance for Boulder Valley School District No. Re2 reports $17,172 per pupil (NCES F-33) - open the district page for the full revenue mix.
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
- 1,863
- 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
Nationwide middle schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~598 students)
Similar student-teacher ratio (~18.1:1)
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. CCD year-over-year: 567 (2022-23) → 619 (2023-24), up 52.
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, gifted-program reporting, counselor availability, chronic absenteeism. 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.
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.