For the 2026-27 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, Whiting Senior High School and Maple Valley-anthon Oto 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 58% (versus the Iowa public high school average of 65%), 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 83%, which is less than the Iowa average of 87%.
The school with highest graduation rate is West Monona High School, with 80-89% 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 28% (majority Hispanic).
Best Public High Schools in Monona County (2026-27)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
West Monona High School
(Math: 60-64% | Reading: 75-79%)
Rank:
Rank:
5/
Bottom 50%10
1314 15th St
Onawa, IA 51040
(712) 433-2453
Onawa, IA 51040
(712) 433-2453
Gr: 9-12 | 161 students Student-teacher ratio: 12:1 Minority enrollment: 19%
Rank: #22.
Whiting Senior High School
(Math: 60-69% | Reading: 65-69%)
Rank:
Rank:
4/
Bottom 50%10
606 West St
Whiting, IA 51063
(712) 455-2468
Whiting, IA 51063
(712) 455-2468
Gr: 7-12 | 61 students Student-teacher ratio: 5:1 Minority enrollment: 24%
Rank: #33.
Maple Valley-anthon Oto High School
(Math: 53% | Reading: 71%)
Rank:
Rank:
3/
Bottom 50%10
501 South 7th Street
Mapleton, IA 51034
(712) 881-1317
Mapleton, IA 51034
(712) 881-1317
Gr: 9-12 | 256 students Student-teacher ratio: 12:1 Minority enrollment: 10%
Monona County Public Schools (Closed)
School
Location
Quick Facts
4th & Elm St
Castana, IA 51010
(712) 353-6331
Castana, IA 51010
(712) 353-6331
Gr: 1-5 | 171 students Student-teacher ratio: 10:1 Minority enrollment: 5%
1100 10th
Onawa, IA 51040
(712) 433-1056
Onawa, IA 51040
(712) 433-1056
Gr: 3-5 | 157 students Student-teacher ratio: 12:1 Minority enrollment: 10%
611 4th
Onawa, IA 51040
(712) 433-1393
Onawa, IA 51040
(712) 433-1393
Gr: PK-2 | 204 students Student-teacher ratio: 11:1 Minority enrollment: 5%
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, Whiting Senior High School and Maple Valley-anthon Oto 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 28% (majority Hispanic).
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