For the 2026-27 school year, there are 4 public high schools serving 840 students in Oregon County, MO.
The top-ranked public high schools in Oregon County, MO are Thayer Sr. High School, Couch High School and Alton High School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Oregon County, MO public high schools have an average math proficiency score of 35% (versus the Missouri public high school average of 36%), and reading proficiency score of 43% (versus the 51% statewide average). High schools in Oregon County have an average ranking of 4/10, which is in the bottom 50% of Missouri public high schools.
Oregon County, MO public high school have a Graduation Rate of 87%, which is less than the Missouri average of 89%.
The school with highest graduation rate is Alton High School, with ≥90% graduation rate. Read more about public school graduation rate statistics in Missouri or national school graduation rate statistics.
Minority enrollment is 6% of the student body (majority Hispanic), which is less than the Missouri public high school average of 31% (majority Black).
Best Public High Schools in Oregon County (2026-27)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Thayer Sr. High School
(Math: 50-54% | Reading: 55-59%)
Rank:
Rank:
9/
Top 20%10
401 E Walnut St
Thayer, MO 65791
(417) 264-4600
Thayer, MO 65791
(417) 264-4600
Gr: 7-12 | 359 students Student-teacher ratio: 12:1 Minority enrollment: 5%
Rank: #22.
Couch High School
(Math: 20-29% | Reading: 40-49%)
Rank:
Rank:
4/
Bottom 50%10
22206 Mo 142
Myrtle, MO 65778
(417) 938-4212
Myrtle, MO 65778
(417) 938-4212
Gr: 7-12 | 92 students Student-teacher ratio: 8:1 Minority enrollment: 8%
Rank: #33.
Alton High School
(Math: 20-24% | Reading: 30-34%)
Rank:
Rank:
2/
Bottom 50%10
505 School Street
Alton, MO 65606
(417) 778-7215
Alton, MO 65606
(417) 778-7215
Gr: 6-12 | 281 students Student-teacher ratio: 9:1 Minority enrollment: 3%
Rank: #44.
Koshkonong High School
(Math: ≤20% | Reading: 21-39%)
Rank:
Rank:
2/
Bottom 50%10
School St
Koshkonong, MO 65692
(417) 867-5601
Koshkonong, MO 65692
(417) 867-5601
Gr: 9-12 | 86 students Student-teacher ratio: 9:1 Minority enrollment: 13%
Frequently Asked Questions
What are the top-ranked public high schools in Oregon County, MO?
The top-ranked public high schools in Oregon County, MO include Thayer Sr. High School, Couch High School and Alton High School.
How many public high schools are located in Oregon County?
4 public high schools are located in Oregon County.
What is the racial composition of students in Oregon County?
Oregon County public high schools minority enrollment is 6% of the student body (majority Hispanic), which is less than the Missouri public high schools average of 31% (majority Black).
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