For the 2026 school year, there are 4 public high schools serving 1,687 students in Cass County, IA.
The top-ranked public high schools in Cass County, IA are Griswold Middle/high School, Atlantic High School and Iowa Connections Academy High School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Cass County, IA public high schools have an average math proficiency score of 56% (versus the Iowa public high school average of 65%), and reading proficiency score of 74% (versus the 71% statewide average). High schools in Cass County have an average ranking of 4/10, which is in the bottom 50% of Iowa public high schools.
Cass County, IA public high school have a Graduation Rate of 84%, which is less than the Iowa average of 87%.
The school with highest graduation rate is Atlantic High School, with 90-94% 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 Cass County (2026)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Griswold Middle/high School
(Math: 70-74% | Reading: 80-84%)
Rank:
Rank:
7/
Top 50%10
20 Madison St.
Griswold, IA 51535
(712) 778-2154
Griswold, IA 51535
(712) 778-2154
Gr: 6-12 | 193 students Student-teacher ratio: 12:1 Minority enrollment: 6%
Rank: #22.
Atlantic High School
(Math: 63% | Reading: 72%)
Rank:
Rank:
4/
Bottom 50%10
1201 E 14th St
Atlantic, IA 50022
(712) 243-5358
Atlantic, IA 50022
(712) 243-5358
Gr: 9-12 | 478 students Student-teacher ratio: 14:1 Minority enrollment: 12%
Rank: #33.
Iowa Connections Academy High School
(Math: 46% | Reading: 76%)
Rank:
Rank:
4/
Bottom 50%10
807 Third St
Anita, IA 50020
(712) 581-0200
Anita, IA 50020
(712) 581-0200
Gr: 9-12 | 1,022 student Minority enrollment: 21%
Rank: #44.
Cam Jr./sr. High School
(Math: 55-59% | Reading: 60-64%)
Rank:
Rank:
3/
Bottom 50%10
1000 Victory Park Rd
Anita, IA 50020
(712) 762-3231
Anita, IA 50020
(712) 762-3231
Gr: 7-12 | 188 students Student-teacher ratio: 10:1 Minority enrollment: 6%
Frequently Asked Questions
What are the top-ranked public high schools in Cass County, IA?
The top-ranked public high schools in Cass County, IA include Griswold Middle/high School, Atlantic High School and Iowa Connections Academy High School.
How many public high schools are located in Cass County?
4 public high schools are located in Cass County.
What is the racial composition of students in Cass County?
Cass 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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