For the 2026 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 47% (versus the Missouri public high school average of 36%), and reading proficiency score of 53% (versus the 51% statewide average). High schools in Marion County have an average ranking of 10/10, which is in the top 10% 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 89%.
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 (2026)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Hannibal Sr. High School
(Math: 55% | Reading: 52%)
Rank:
Rank:
9/
Top 20%10
4500 Mcmasters Ave
Hannibal, MO 63401
(573) 221-2733
Hannibal, MO 63401
(573) 221-2733
Gr: 9-12 | 1,050 student Student-teacher ratio: 15:1 Minority enrollment: 17%
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
Gr: K-12 | 26 students Student-teacher ratio: 7:1 Minority enrollment: 16%
Rank: #33.
Palmyra High School
(Math: 25-29% | 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
Gr: 9-12 | 360 students Student-teacher ratio: 13:1 Minority enrollment: 7%
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
Gr: 7-12 | 112 students Student-teacher ratio: 9:1 Minority enrollment: 4%
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
Gr: 9-12
Marion County Public Schools (Closed)
School
Location
Quick Facts
Mississippi Valley (Closed 2023)
Special Education School
312 Munger Lane
Hannibal, MO 63401
(573) 221-1857
Hannibal, MO 63401
(573) 221-1857
Gr: Inquire with school | 27 students Student-teacher ratio: 5:1 Minority enrollment: 15%
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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