- Enrollment
- 355
- Students per teacher
- 11.8:1
- Resource Index
- 58/100
High school (grades 9-12) · Center, MO
Mark Twain Sr. High
Federal NCES profile for Mark Twain Sr. High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 55/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 292571001510
👥 S:T ratio 44
🌟 Gifted program 70
🎓 Counselors 50
📋 Attendance 54
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Mark Twain Sr. High earns 55/100 on the Resource Investment Index, with class sizes near the Missouri median.
- #3 of 3
- public schools in Center · Resource Index
- 55
- Resource Index · Higher
- 13.9:1
- students per teacher
- 27.6%
- free-lunch eligible
Mark Twain Sr. High has class sizes near the Missouri median. Computed live against every Missouri school reporting to NCES.
By Resource Investment Index, Mark Twain Sr. High ranks #3 of 3 public schools in Center, MO.
School address
District: Ralls Co. R-Ii · Missouri
NCES ID 292571001510 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
+2 students YoY
Mark Twain Sr. High held near 259 students from 2022-23 to 2023-24 (+2 headcount).
Teacher FTE added 18.8 → 19.6 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
+2 students YoY 292571001510 · Center, MO High · SMALL · TRAD
251 enr · 13.9:1 · 27.6% lunch · RII 55
Nearest enrollment peer: Ralls County Elementary (355 students)
Mark Twain Sr. High held near 259 students from 2022-23 to 2023-24 (+2 headcount). Teacher FTE added 18.8 → 19.6 across the same CCD years. Read with this school → · District book → · Missouri schools → · Find another →
Mark Twain Sr. High in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Ralls County E
Ralls County Elementary
355 students
- This school
Mark Twain Sr. High
251 students
- Mark Twain Jr.
Mark Twain Jr. High
194 students
What this shows Mark Twain Sr. High reports 251 students on the CCD universe file.
How Mark Twain Sr. High compares
Mark Twain 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 | 13.9:1 | ▲ 9% | 12.8:1 | 15.7:1 |
| Free-lunch eligible | 27.6% | ▼ 40% | 46.1% | 51.7% |
| Enrollment | 251 | top 61% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
13.9:1
Leaner classes than 58% of US schools, a middle-of-the-pack class size.
251
Bigger than 25% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
27.6%
free-lunch eligible
- 40% below the Missouri average of 46.1%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
13.9:1
students per teacher
- 9% above state mean
Top 68% in Missouri - lower ratio than 32% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
18.3%
chronically absent (missed 10%+ of school days)
In the 15-20% range, nearing the "high" absenteeism threshold.
Funding equity
$10,693
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
Counselors1.0 FTE
Per 251 students, the combined health-and-guidance staffing load for this school.
Discipline context
26
in-school suspensions + 9 out-of-school
Suspension rate: 10.4 per 100 students. Combined in-school and out-of-school rate: 13.9 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 94.0%
African American 2.0%
Hispanic or Latino 2.0%
Two or More 1.6%
Asian 0.4%
Largest group: White at 94.0% of enrollment.
Student-body diversity index 11.5/100
Simpson diversity index - at 11.5, Mark Twain Sr. High is less mixed than the Missouri school average of 31.0.
Programs
AP program Not offered
Gifted & talented Yes
District finance for Ralls Co. R-Ii reports $10,693 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Mark Twain Sr. High Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Ralls County Elementary | Larger | Similar economic need | Lower S:T ratio |
| Mark Twain Jr. High | Similar size | Similar economic need | Higher S:T ratio |
Comparisons are relative to Mark Twain Sr. High's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 194
- Students per teacher
- 16.2:1
- Resource Index
- 58/100
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 (~251 students)
Frequently asked questions about Mark Twain Sr. High
How many students attend Mark Twain Sr. High?
Mark Twain Sr. High has 251 students enrolled. It is a high school in Center, MO. CCD year-over-year: 257 (2022-23) → 259 (2023-24), nearly flat (+2).
What is the student-teacher ratio at Mark Twain Sr. High?
The student-teacher ratio at Mark Twain Sr. High is 13.9:1, which is 9% higher than the Missouri average of 12.8:1 and 11% lower than the national average of 15.7:1.
What percentage of students receive free lunch at Mark Twain Sr. High?
27.6% of students at Mark Twain Sr. High are eligible for free lunch, compared to the Missouri average of 46.1%.
What is the racial and ethnic makeup of Mark Twain Sr. High?
The largest demographic group at Mark Twain Sr. High is White at 94.0% of enrollment, in Center, MO.
What is the Resource Investment Index for Mark Twain Sr. High?
Mark Twain Sr. High has a Resource Investment Index of 55/100 (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 Mark Twain Sr. High rank among public schools in Center?
By Resource Investment Index, Mark Twain Sr. High ranks #3 of 3 public schools in Center, MO. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking.
What other schools are in Ralls Co. R-Ii?
Besides Mark Twain Sr. High, Ralls Co. R-Ii also operates Ralls County Elementary (355 students) and Mark Twain Jr. High (194 students). See the Ralls Co. R-Ii district page for the complete list.