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Johnston Senior High School

6500 NW 100th Street, Johnston, IA 50131

BSchola Grade
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Grades
10–12
High
Students
1,820
Enrolled 2024–25
Students per teacher
20.9 : 1
Full-time teachers
District
Johnston Comm School District
Polk County

Schola Grade B · Above average

Letter grade (A–F) · compared with 331 Iowa high schools · How we grade
Test scores72% proficient in math & reading
61stpercentile
Equity50% of low-income students proficient
31stpercentile
Attendance31% chronically absent
32ndpercentile
Graduation rate97% graduate in 4 years
86thpercentile
College readinessAt least 43% take AP, IB or dual-enrollment courses
88thpercentile
Class size20.9 students per teacher
2ndpercentile

Percentiles compare this school with other Iowa high schools; the line marks the middle. Data: test scores 2021–22, graduation and absenteeism 2022–23 (U.S. Department of Education, EDFacts); coursework 2023–24 (Civil Rights Data Collection); staffing 2024–25 (NCES).

About Johnston Senior High School

Johnston Senior High School is a public high school in Johnston, Iowa, serving grades 10–12. It is part of Johnston Comm School District. The school is located in a large suburb in Polk County.

In the 2024–25 school year, 1,820 students were enrolled, with about 20.9 students for every full-time teacher. That ratio is larger than the typical Iowa high school (13.8 students per teacher). Its Schola Grade is B (above average), compared with 331 Iowa high schools.

Grades & enrollment

Students per grade, 2024–25Grades 10–12

Location & nearby schools

6500 NW 100th Street
Johnston, IA 50131
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School details

Type
Public School · What this means
Level
High
Grades offered
10–12
Enrollment (2024–25)
1,820 students
Students per teacher
20.9 to 1
AP courses offered
8
Charter school
No
Magnet school
No
Virtual learning
Offers virtual courses
Locale
Suburb — Large
School district
Johnston Comm School District
County
Polk County
NCES school ID
191545000927

Schools near Johnston Senior High School

All 8 schools in Johnston →

School data comes from the U.S. Department of Education: the National Center for Education Statistics (NCES) Common Core of Data and EDGE school locations (2024–25) and Private School Survey (2023–24), the Civil Rights Data Collection (2023–24), and EDFacts (test results 2021–22; graduation and chronic absenteeism 2022–23), plus other public sources. Please contact the school to confirm enrollment, programs, and other details. How we source data.