- Enrollment
- 2,007
- Students per teacher
- 16.9:1
- Resource Index
- 45/100
High school (grades 9-12) · Columbia, MO
Rock Bridge Sr. High
Federal NCES profile for Rock Bridge Sr. High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 51/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 290100000299
👥 S:T ratio 26
🌟 Gifted program 70
🎓 Counselors 49
📋 Attendance 61
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Rock Bridge Sr. High earns 51/100 on the Resource Investment Index, with class sizes larger than 96% of Missouri schools. It is also one of the largest schools in Missouri.
- #1 of 3
- high schools in Columbia · Resource Index
- 51
- Resource Index · Higher
- 18.5:1
- large classes for Missouri
- 13.5%
- free-lunch eligible
Rock Bridge Sr. High has class sizes larger than 96% of Missouri schools. Computed live against every Missouri school reporting to NCES.
By Resource Investment Index, Rock Bridge Sr. High ranks #1 of 3 high schools in Columbia, MO.
School address
District: Columbia 93 · Missouri
NCES ID 290100000299 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
+24 students YoY
Rock Bridge Sr. High held near 2,056 students from 2022-23 to 2023-24 (+24 headcount).
Teacher FTE lost 108.3 → 107.9 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
+24 students YoY 290100000299 · Columbia, MO High · MID · TRAD
1,997 enr · 18.5:1 · 13.5% lunch · RII 51
Nearest enrollment peer: David H. Hickman High (2,007 students)
Rock Bridge Sr. High held near 2,056 students from 2022-23 to 2023-24 (+24 headcount). Teacher FTE lost 108.3 → 107.9 across the same CCD years. Read with this school → · District book → · Missouri schools → · Find another →
Rock Bridge Sr. High in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- David H. Hickm
David H. Hickman High
2,007 students
- This school
Rock Bridge Sr. High
1,997 students
- Muriel W. Batt
Muriel W. Battle High School
1,492 students
- Ann Hawkins Ge 736
Ann Hawkins Gentry Middle
736 students
- Beulah Ralph E 656
Beulah Ralph Elementary
656 students
- Mary Paxton Ke 619
Mary Paxton Keeley Elem.
619 students
What this shows Rock Bridge Sr. High reports 1,997 students on the CCD universe file.
How Rock Bridge Sr. High compares
Rock Bridge Sr. High held steady on CCD headcount: ratios and free-lunch share vs Missouri and U.S. means.
| Metric | This school | vs Missouri | Missouri avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 18.5:1 | ▲ 45% | 12.8:1 | 15.7:1 |
| Free-lunch eligible | 13.5% | ▼ 71% | 46.1% | 51.7% |
| Enrollment | 1,997 | top 1% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
18.5:1
Leaner classes than 22% of US schools, heavier class loads than most.
1,997
Bigger than 98% of US schools by enrollment, a large campus nationally.
Equity indicators methodology
Economic need
13.5%
free-lunch eligible
- 71% below the Missouri average of 46.1%
Below the 40% Title I threshold, among the lower-need profiles in the state; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
18.5:1
students per teacher
- 45% above state mean
Top 96% in Missouri - lower ratio than 4% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
15.8%
chronically absent (missed 10%+ of school days)
In the 15-20% range, nearing the "high" absenteeism threshold.
Funding equity
$13,936
per pupil, district-wide
- below Missouri avg of $14,087
Well below the U.S. average per-pupil spend, a notably leaner funding position that may affect programs, facilities, and staffing.
Support staff
Counselors7.9 FTE
Per 253 students, the combined health-and-guidance staffing load for this school.
Discipline context
126
in-school suspensions + 60 out-of-school
Suspension rate: 6.3 per 100 students. Combined in-school and out-of-school rate: 9.3 per 100 students. Reported via the Civil Rights Data Collection. Includes 1 expulsion.
Student demographics
White 66.2%
African American 10.7%
Two or More 8.3%
Asian 7.9%
Hispanic or Latino 6.5%
Native Hawaiian / Pacific Islander 0.3%
American Indian / Alaska Native 0.2%
Largest group: White at 66.2% of enrollment.
Student-body diversity index 53.3/100
Simpson diversity index - at 53.3, Rock Bridge Sr. High is more mixed than the Missouri school average of 31.0.
Programs
AP courses offered 21
Gifted & talented Yes
District finance for Columbia 93 reports $13,936 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Rock Bridge Sr. High Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| David H. Hickman High | Similar size | Higher economic need | Lower S:T ratio |
| Muriel W. Battle High School | Smaller | Higher economic need | Lower S:T ratio |
| Ann Hawkins Gentry Middle | Smaller | Higher economic need | Lower S:T ratio |
| Beulah Ralph Elementary | Smaller | Similar economic need | Lower S:T ratio |
| Mary Paxton Keeley Elem. | Smaller | Higher economic need | Lower S:T ratio |
Comparisons are relative to Rock Bridge Sr. High's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,492
- Students per teacher
- 14.9:1
- Resource Index
- 41/100
- Enrollment
- 736
- Students per teacher
- 14.4:1
- Resource Index
- 51/100
- Enrollment
- 656
- Students per teacher
- 14.6:1
- Resource Index
- 52/100
- Enrollment
- 619
- Students per teacher
- 15.5:1
- Resource Index
- 52/100
Nationwide high 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 (~1,997 students)
Frequently asked questions about Rock Bridge Sr. High
How many students attend Rock Bridge Sr. High?
Rock Bridge Sr. High has 1,997 students enrolled. It is a high school in Columbia, MO. CCD year-over-year: 2,032 (2022-23) → 2,056 (2023-24), nearly flat (+24).
What is the student-teacher ratio at Rock Bridge Sr. High?
The student-teacher ratio at Rock Bridge Sr. High is 18.5:1, which is 45% higher than the Missouri average of 12.8:1 and 18% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Rock Bridge Sr. High?
13.5% of students at Rock Bridge Sr. High are eligible for free lunch, compared to the Missouri average of 46.1%.
What is the racial and ethnic makeup of Rock Bridge Sr. High?
The largest demographic group at Rock Bridge Sr. High is White at 66.2% of enrollment, in Columbia, MO. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 53.3/100.
What is the Resource Investment Index for Rock Bridge Sr. High?
Rock Bridge Sr. High has a Resource Investment Index of 51/100 (higher 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 Rock Bridge Sr. High rank among high schools in Columbia?
By Resource Investment Index, Rock Bridge Sr. High ranks #1 of 3 high schools in Columbia, MO. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all high schools in Columbia on the city page.
What other schools are in Columbia 93?
Besides Rock Bridge Sr. High, Columbia 93 also operates David H. Hickman High (2,007 students), Muriel W. Battle High School (1,492 students), and Ann Hawkins Gentry Middle (736 students). See the Columbia 93 district page for the complete list.