Serving 251 students in grades 9-12, Mark Twain Sr. High School ranks in the top 50% of all schools in Missouri for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is 25-29% (which is lower than the Missouri state average of 40%). The percentage of students achieving proficiency in reading/language arts is 50-54% (which is higher than the Missouri state average of 43%).
The student-teacher ratio of 12:1 is equal to the Missouri state level of 12:1.
Minority enrollment is 6% of the student body (majority Black and Hispanic), which is lower than the Missouri state average of 33% (majority Black).
Quick Facts (2026-27)
- Grades: 9-12
- Enrollment: 251 students
- Student-Teacher Ratio: 12:1
- Minority Enrollment: 6%
- Graduation Rate: ≥90% (Top 50% in MO)
- Overall Testing Rank: Top 50%
- Math Proficiency: 25-29% (Btm 50%)
- Reading Proficiency: 50-54% (Top 30%)
- Science Proficiency: 25-29% (Btm 50%)
- Attendance Zone: Mark Twain Sr. High's attendance zone covers the entire school district in Center, MO, encompassing approximately 315.8 square miles. Families can typically expect a drive of 15-20 minutes to the school, with the furthest edge of the zone located about 20.2 miles away.
- Source: National Center for Education Statistics (NCES), MO Dept. of Education
School Overview
Mark Twain Sr. High School's student population of 251 students has stayed relatively flat over five school years.
The teacher population of 21 teachers has grown by 10% over five school years.
Grades Offered
Grades 9-12
(No virtual instruction)
(No virtual instruction)
Total Students
251 students
Total Classroom Teachers
21 teachers
School Rankings
Mark Twain Sr. High School ranks within the top 50% of all 2,076 schools in Missouri (based off of combined math and reading proficiency testing data).
The diversity score of Mark Twain Sr. High School is 0.12, which is less than the diversity score at state average of 0.52. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#1016 out of 2076 schools
(Top 50%)
(Top 50%)
Math Test Scores (% Proficient)
25-29%
40%
Reading/Language Arts Test Scores (% Proficient)
50-54%
43%
Science Test Scores (% Proficient)
25-29%
38%
Student-Teacher Ratio
12:1
12:1
American Indian
n/a
n/a
Asian
n/a
2%
Hispanic
2%
9%
Black
2%
15%
White
94%
67%
Hawaiian
n/a
1%
Two or more races
2%
6%
All Ethnic Groups
Graduation Rate
≥90%
90%
Chronically Absent Students
(22-23)22.3%
20.5%
Eligible for Free Lunch
23%
43%
Eligible for Reduced Lunch
6%
7%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), MO Dept. of Education
Frequently Asked Questions
What is Mark Twain Sr. High School's ranking?
Mark Twain Sr. High School is ranked #1016 out of 2,076 schools, which ranks it among the top 50% of public schools in Missouri.
What percent of students have achieved state testing proficiency in math and reading?
25-29% of students have achieved math proficiency (compared to the 40% MO state average), while 50-54% of students have achieved reading proficiency (compared to the 43% MO state average).
What is the graduation rate of Mark Twain Sr. High School?
The graduation rate of Mark Twain Sr. High School is 90%, which is equal to the Missouri state average of 90%.
How many students attend Mark Twain Sr. High School?
251 students attend Mark Twain Sr. High School.
What is the racial composition of the student body?
94% of Mark Twain Sr. High School students are White, 2% of students are Hispanic, 2% of students are Black, and 2% of students are Two or more races.
What is the student-teacher ratio of Mark Twain Sr. High School?
Mark Twain Sr. High School has a student ration of 12:1, which is equal to the Missouri state average of 12:1.
What grades does Mark Twain Sr. High School offer ?
Mark Twain Sr. High School offers enrollment in grades 9-12 (No virtual instruction).
What school district is Mark Twain Sr. High School part of?
Mark Twain Sr. High School is part of Ralls County R-II School District.
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