For the 2025 school year, there are 4 public high schools serving 1,102 students in Washington County, MO.
The top ranked public high schools in Washington County, MO are Potosi High School, Kingston High School and Citadel School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Washington County, MO public high schools have an average math proficiency score of 30% (versus the Missouri public high school average of 37%), and reading proficiency score of 49% (versus the 51% statewide average). High schools in Washington County have an average ranking of 5/10, which is in the bottom 50% of Missouri public high schools.
Washington County, MO public high school have a Graduation Rate of 91%, which is more than the Missouri average of 90%.
The school with highest graduation rate is Potosi 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 4% of the student body (majority Hispanic), which is less than the Missouri public high school average of 30% (majority Black).
Best Public High Schools in Washington County (2025)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Grades
Students
Rank: #11.
Potosi High School
(Math: 40-44% | Reading: 55-59%)
Rank:
Rank:
8/
Top 30%10
1 Trojan Dr
Potosi, MO 63664
(573) 438-2156
Potosi, MO 63664
(573) 438-2156
Grades: 9-12
| 679 students
Rank: #22.
Kingston High School
(Math: 20-24% | Reading: 50-59%)
Rank:
Rank:
5/
Bottom 50%10
10047 Diamond Rd
Cadet, MO 63630
(573) 438-4982
Cadet, MO 63630
(573) 438-4982
Grades: 9-12
| 248 students
Rank: #33.
Citadel School
Special Education School
(Math: <50% | Reading: <50% )
Rank:
Rank:
5/
Bottom 50%10
400 S Mine
Potosi, MO 63664
(573) 438-2472
Potosi, MO 63664
(573) 438-2472
Grades: K-12
| 4 students
Rank: #44.
Valley High School
(Math: 15-19% | Reading: 30-34%)
Rank:
Rank:
2/
Bottom 50%10
1 Viking Dr
Caledonia, MO 63631
(573) 779-3515
Caledonia, MO 63631
(573) 779-3515
Grades: 7-12
| 171 students
Washington County Public Schools (Closed)
School
Location
Grades
Students
#2 Viking Drive
Caledonia, MO 63631
(573) 766-5689
Caledonia, MO 63631
(573) 766-5689
Grades: K-2
| 96 students
Citadel (Closed 2023)
Special Education School
400 South Mines
Potosi, MO 63664
(573) 438-2472
Potosi, MO 63664
(573) 438-2472
Grades: Inquire with school
| 10 students
Frequently Asked Questions
What are the top ranked public high schools in Washington County, MO?
The top ranked public high schools in Washington County, MO include Potosi High School, Kingston High School and Citadel School.
How many public high schools are located in Washington County?
4 public high schools are located in Washington County.
What is the racial composition of students in Washington County?
Washington County public high schools minority enrollment is 4% of the student body (majority Hispanic), which is less than the Missouri public high schools average of 30% (majority Black).
Which public high schools in Washington County are often viewed compared to one another?
Popular comparisons of public high schools in Washington County include: Kingston High School vs. Potosi High School, Potosi High School vs. Kingston High School
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