For the 2025 school year, there are 3 public high schools serving 535 students in Monona County, IA.
The top ranked public high schools in Monona County, IA are West Monona High School, Maple Valley-anthon Oto High School and Whiting Senior High School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Monona County, IA public high schools have an average math proficiency score of 54% (versus the Iowa public high school average of 60%), and reading proficiency score of 72% (versus the 71% statewide average). High schools in Monona County have an average ranking of 4/10, which is in the bottom 50% of Iowa public high schools.
Monona County, IA public high school have a Graduation Rate of 85%, which is less than the Iowa average of 88%.
The school with highest graduation rate is Maple Valley-anthon Oto High School, with ≥90% graduation rate. Read more about public school graduation rate statistics in Iowa or national school graduation rate statistics.
Minority enrollment is 16% of the student body (majority Hispanic), which is less than the Iowa public high school average of 27% (majority Hispanic).
Best Public High Schools in Monona County (2025)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Grades
Students
Rank: #11.
West Monona High School
(Math: 60-64% | Reading: 75-79%)
Rank:
Rank:
6/
Top 50%10
1314 15th St
Onawa, IA 51040
(712) 433-2453
Onawa, IA 51040
(712) 433-2453
Grades: 9-12
| 191 students
Rank: #22.
Maple Valley-anthon Oto High School
(Math: 53% | Reading: 71%)
Rank:
Rank:
4/
Bottom 50%10
501 South 7th Street
Mapleton, IA 51034
(712) 881-1317
Mapleton, IA 51034
(712) 881-1317
Grades: 9-12
| 278 students
Rank: #33.
Whiting Senior High School
(Math: 40-44% | Reading: 65-69%)
Rank:
Rank:
3/
Bottom 50%10
606 West St
Whiting, IA 51063
(712) 455-2468
Whiting, IA 51063
(712) 455-2468
Grades: 7-12
| 66 students
Monona County Public Schools (Closed)
School
Location
Grades
Students
4th & Elm St
Castana, IA 51010
(712) 353-6331
Castana, IA 51010
(712) 353-6331
Grades: 1-5
| 171 students
1100 10th
Onawa, IA 51040
(712) 433-1056
Onawa, IA 51040
(712) 433-1056
Grades: 3-5
| 157 students
Frequently Asked Questions
What are the top ranked public high schools in Monona County, IA?
The top ranked public high schools in Monona County, IA include West Monona High School, Maple Valley-anthon Oto High School and Whiting Senior High School.
How many public high schools are located in Monona County?
3 public high schools are located in Monona County.
What is the racial composition of students in Monona County?
Monona County public high schools minority enrollment is 16% of the student body (majority Hispanic), which is less than the Iowa public high schools average of 27% (majority Hispanic).
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