Enrollment
251
High
DISTRICT 267 · STATE 501
SCHOOL COMMUNITY·RALLS CO. R-II·NCES 292571001510
MARK TWAIN SR. HIGH
21622 HWY 19, CENTER, MO 63436 · (573) 267-3397 · Ralls County
GRADES 09–12HIGH43-RURALREGULAR SCHOOL251 STUDENTS
Student : Teacher
12.0:1
21 FTE teachers
DISTRICT 12.7:1 · STATE 12.2:1
Free / Reduced Lunch
29%
72 students
DISTRICT 31% · STATE 54%
Community
0
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 9 | 67 | 27% |
| Grade 10 | 67 | 27% |
| Grade 11 | 66 | 26% |
| Grade 12 | 51 | 20% |
Student demographics
11%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 9% · STATE 52% · 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
School pathway
Feeds from
Based on grade levels within RALLS CO. R-II. Attendance zones can vary; confirm enrollment with the district.
Test scores
MAP 2024-25 . % Proficient + AdvancedMath
20.9%
MO avg 43.8% . -30.1pp since 2021
What this means: On the MAP, Missouri's statewide test, about 21 of every 100 students at this school do math at grade level. The Missouri average is about 44 of 100. Math scores are down about 30 points since 2021.
MAP results by year
| School year | Math |
|---|---|
| 2024-25 | 20.9% |
| 2023-24 | 24.2% |
| 2022-23 | 28.6% |
| 2021-22 | 51.0% |
% Proficient + Advanced, all students and all tested grades.
Source: MAP. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
UNDERPERFORMING
Bottom 10% of MO schools after controlling for student poverty
Actual proficiency
24.3%
composite math + reading, all grades
Predicted
49.1%
based on MO schools with similar FRL share
Beats by
-24.8pp
below demographic expectation
What this means: About 24% of students here test proficient in math and reading, below the roughly 49% typical for Missouri schools with a similar share of low-income students. BeatsExpectations compares each school with others at the same poverty level, not by raw scores, so a school lands here when its results trail those comparable schools, which is not the same as having low scores. A higher-scoring school can still fall in this tier if similar schools score higher still.
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 MARK TWAIN SR. HIGH
MARK TWAIN SR. HIGH's state test result (24.3% proficient) is higher than 1 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| MARK TWAIN SR. HIGH this school | 251 | 28.7% | 24.3% |
| ROCK PORT HIGH ROCK PORT | 193 | 28.5% | 40.4% |
| NORTH PLATTE HIGH DEARBORN | 220 | 25.9% | 33.4% |
| GLASGOW HIGH GLASGOW | 188 | 28.2% | 18.0% |
| WELLINGTON-NAPOLEON HIGH WELLINGTON | 203 | 28.1% | 39.8% |
| EUGENE HIGH EUGENE | 264 | 24.2% | 40.6% |
Matched among Missouri high 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 MARK TWAIN SR. HIGH ranks
Among high schools| Measure | This school | In Missouri |
|---|---|---|
| State test proficiency ranked highest first | 24.3% | #363 of 443 |
| Math proficiency ranked highest first | 20.9% | #368 of 453 ▼ 39 |
| Enrollment ranked largest first | 251 | #290 of 561 |
| Students per teacher ranked fewest first | 12.0:1 | #75 of 343 |
| Diversity index ranked most diverse first | 11.5% | #279 of 343 |
| Free and reduced lunch ranked highest share first | 28.7% | #366 of 455 |
| Enrollment change since 2017-18 ranked fastest growth first | +8.7% | #77 of 151 |
Ranked against other public high 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
251
+6 (+2%) vs 2020
-44% since 1990-91, when it was 451
Student : Teacher
12.0:1
was 13.6:1
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 | 251 | 21 | 12.0:1 | 29% (72) |
| 2023-24 | 259 | 19.6 | 13.2:1 | 33% (86) |
| 2022-23 | 257 | 18.8 | 13.7:1 | 31% (80) |
| 2020-21 | 245 | 18 | 13.6:1 | 30% (73) |
| 2017-18 | 231 | 17.8 | 13.0:1 | 39% (91) |
| 2015-16 | 233 | 16 | 14.6:1 | 40% (94) |
| 2010-11 | 247 | 20 | 12.3:1 | 32% (78) |
| 2000-01 | 285 | 20 | 14.3:1 | 20% (58) |
| 1990-91 | 451 | 28 | 16.1:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for MARK TWAIN SR. HIGH.
Since 2017-18: students up 9% (231 to 251); teachers up 18% (17.8 to 21).
About MARK TWAIN SR. HIGH
A low-enrollment high school in CENTER, Missouri, MARK TWAIN SR. HIGH is part of RALLS CO. R-II. Enrollment in 2024-25 was 251 students in grades 9 through 12. The average for high schools in Missouri is about 501 students, so this school is 50% smaller than average.
RALLS CO. R-II has 800 students in 3 schools, and MARK TWAIN SR. HIGH is one of those schools.
Federal enrollment data show MARK TWAIN SR. HIGH is 94% White. That is close to the 93% White share among all Ralls County residents. The school's diversity index is 11%, meaning two students picked at random have an 11% chance of belonging to different racial or ethnic groups.
MARK TWAIN SR. HIGH's 21 full-time-equivalent teachers put its ratio at 12.0:1. That is close to the 12.2:1 average for high schools in Missouri. Eligibility for subsidized school meals is 29%. For comparison, public schools in Ralls County average 31%.
A school in Missouri with MARK TWAIN SR. HIGH's free or reduced-price lunch share would be expected to score about 49.1%. MARK TWAIN SR. HIGH scores 24.3%.
Among Ralls County residents, the median household income is $65,388, roughly 17% of adults have a four-year degree or more, and the share of residents below the poverty line is 9%. MARK TWAIN SR. HIGH is one of 3 public schools in the county.
The shortest distance from MARK TWAIN SR. HIGH to another public school is less than a tenth of a mile, to MARK TWAIN JR. HIGH. Counting only straight-line distance, 2 other public schools are within five miles. MARK TWAIN SR. HIGH places 9th of 9 on proficiency among the closest schools that report scores.
Locale data from NCES put MARK TWAIN SR. HIGH in rural territory far from an urban area (Rural: Remote).
In 2020-21, MARK TWAIN SR. HIGH enrolled 245; in 2024-25, 251. The student-to-teacher ratio went down from 13.6:1 to 12.0:1.
Discussions about MARK TWAIN SR. HIGH may include school events, clubs, and volunteer needs. Questions from prospective families are welcome too.
Ralls County at a glance
View full county profilePopulation
10,428
Census ACS
Median income
$65,388
Household, ACS
Bachelor's+
17%
Adults 25+
Poverty rate
9%
Below federal line
Schools in county
3
800 students
Quick facts
Related schools
Other schools in RALLS CO. R-II
- RALLS COUNTY ELEMENTARYElementary · 355 students
- MARK TWAIN JR. HIGHMiddle · 194 students
Other schools in CENTER
- RALLS COUNTY ELEMENTARYElementary · 355 students
- MARK TWAIN JR. HIGHMiddle · 194 students
Nearby schools
- MARK TWAIN JR. HIGH0.0 mi · 194
- RALLS COUNTY ELEMENTARY0.1 mi · 355
- FRANKFORD ELEM.10.3 mi · 114
- OAKWOOD ELEM.13.2 mi · 272
- VAN-FAR ELEM.14.5 mi · 323
- VAN-FAR JR./SR. HIGH14.9 mi · 248
Frequently asked questions
About MARK TWAIN SR. HIGHHow many students attend MARK TWAIN SR. HIGH?
MARK TWAIN SR. HIGH enrolls approximately 251 students in grades 09-12.
Is MARK TWAIN SR. HIGH an elementary, middle, or high school?
MARK TWAIN SR. HIGH is a high school covering grades 09-12.
What is the student-teacher ratio at MARK TWAIN SR. HIGH?
The student-to-teacher ratio at MARK TWAIN SR. HIGH is approximately 12.0:1 (21 FTE teachers).
How diverse is MARK TWAIN SR. HIGH?
MARK TWAIN SR. HIGH reports a student body of 94% White, 2% Hispanic, 2% Black, 0% Asian, 2% Two or more.
What district is MARK TWAIN SR. HIGH in?
MARK TWAIN SR. HIGH is part of RALLS CO. R-II.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.