For the 2025 school year, there are 5 public high schools serving 1,548 students in Marion County, MO.
The top ranked public high schools in Marion County, MO are Hannibal Sr. High School, Mississippi Valley School and Palmyra High School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Marion County, MO public high schools have an average math proficiency score of 43% (versus the Missouri public high school average of 37%), and reading proficiency score of 53% (versus the 51% statewide average). High schools in Marion County have an average ranking of 9/10, which is in the top 20% of Missouri public high schools.
Marion County, MO public high school have a Graduation Rate of 92%, which is more than the Missouri average of 90%.
The school with highest graduation rate is Palmyra High School, with ≥95% graduation rate. Read more about public school graduation rate statistics in Missouri or national school graduation rate statistics.
Minority enrollment is 14% of the student body (majority Black), which is less than the Missouri public high school average of 30% (majority Black).
Best Public High Schools in Marion County (2025)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Grades
Students
Rank: #11.
Hannibal Sr. High School
(Math: 50% | Reading: 52%)
Rank:
Rank:
8/
Top 30%10
4500 Mcmasters Ave
Hannibal, MO 63401
(573) 221-2733
Hannibal, MO 63401
(573) 221-2733
Grades: 9-12
| 1,050 students
Rank: #22.
Mississippi Valley School
Special Education School
(Math: <50% | Reading: <50%)
Rank:
Rank:
8/
Top 30%10
312 Munger Ln
Hannibal, MO 63401
(573) 248-2627
Hannibal, MO 63401
(573) 248-2627
Grades: K-12
| 26 students
Rank: #33.
Palmyra High School
(Math: 15-19% | Reading: 60-64%)
Rank:
Rank:
6/
Top 50%10
1703 S Main St
Palmyra, MO 63461
(573) 769-2067
Palmyra, MO 63461
(573) 769-2067
Grades: 9-12
| 360 students
Rank: #44.
Marion Co. High School
(Math: 40-49% | Reading: 30-39%)
Rank:
Rank:
5/
Bottom 50%10
2905 Hwy D
Philadelphia, MO 63463
(573) 439-5913
Philadelphia, MO 63463
(573) 439-5913
Grades: 7-12
| 112 students
Rank: n/an/a
Hannibal Career Tech. Center
Vocational School
4550 Mcmasters Ave
Hannibal, MO 63401
(573) 221-4430
Hannibal, MO 63401
(573) 221-4430
Grades: 9-12
| n/a students
Marion County Public Schools (Closed)
School
Location
Grades
Students
Mississippi Valley (Closed 2023)
Special Education School
312 Munger Lane
Hannibal, MO 63401
(573) 221-1857
Hannibal, MO 63401
(573) 221-1857
Grades: Inquire with school
| 27 students
Frequently Asked Questions
What are the top ranked public high schools in Marion County, MO?
The top ranked public high schools in Marion County, MO include Hannibal Sr. High School, Mississippi Valley School and Palmyra High School.
How many public high schools are located in Marion County?
5 public high schools are located in Marion County.
What is the racial composition of students in Marion County?
Marion County public high schools minority enrollment is 14% of the student body (majority Black), which is less than the Missouri public high schools average of 30% (majority Black).
Which public high schools in Marion County are often viewed compared to one another?
Popular comparisons of public high schools in Marion County include: Hannibal Sr. High School vs. Palmyra High School, Palmyra High School vs. Hannibal Sr. High School
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