Serving 1,790 students in grades 10-12, Johnston Senior High School ranks in the top 50% of all schools in Iowa for overall test scores (math proficiency is top 50%, and reading proficiency is top 50%).
The percentage of students achieving proficiency in math is 69% (which is higher than the Iowa state average of 64%). The percentage of students achieving proficiency in reading/language arts is 74% (which is higher than the Iowa state average of 70%).
The student:teacher ratio of 20:1 is higher than the Iowa state level of 14:1.
Minority enrollment is 31% of the student body (majority Black and Hispanic), which is higher than the Iowa state average of 28% (majority Hispanic and Black).
Quick Stats (2024-25)
- School Type: Magnet School
- Grades: 10-12
- Enrollment: 1,790 students
- Student:Teacher Ratio: 20:1
- Minority Enrollment: 31%
- Graduation Rate: 96% (Top 5% in IA)
- Overall Testing Rank: Top 50%
- Math Proficiency: 69% (Top 50%)
- Reading Proficiency: 74% (Top 50%)
- Science Proficiency: 69% (Top 50%)
- Source: National Center for Education Statistics (NCES), IA Dept. of Education
Top Rankings
Johnston Senior High School ranks among the top 20% of public schools in Iowa for:
Category
Attribute
Graduation Rate
School Overview
Johnston Senior High School's student population of 1,790 students has grown by 7% over five school years.
The teacher population of 90 teachers has grown by 11% over five school years.
School Type
Grades Offered
Grades 10-12
(offers virtual instruction)
(offers virtual instruction)
Total Students
1,790 students
Gender %
Total Classroom Teachers
90 teachers
Students by Grade
School Calendar
School Rankings
Johnston Senior High School ranks within the top 50% of all 1,233 schools in Iowa (based off of combined math and reading proficiency testing data).
The diversity score of Johnston Senior High School is 0.50, which is more than the diversity score at state average of 0.46. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#550 out of 1233 schools
(Top 50%)
(Top 50%)
Math Test Scores (% Proficient)
69%
64%
Reading/Language Arts Test Scores (% Proficient)
74%
70%
Science Test Scores (% Proficient)
69%
63%
Student : Teacher Ratio
20:1
14:1
American Indian
n/a
n/a
Asian
7%
2%
Hispanic
8%
13%
Black
11%
7%
White
69%
72%
Hawaiian
n/a
1%
Two or more races
5%
5%
All Ethnic Groups
Graduation Rate
96%
90%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
21%
36%
Eligible for Reduced Lunch
2%
6%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), IA Dept. of Education
Frequently Asked Questions
What is Johnston Senior High School's ranking?
Johnston Senior High School is ranked #550 out of 1,233 schools, which ranks it among the top 50% of public schools in Iowa.
What percent of students have achieved state testing proficiency in math and reading?
69% of students have achieved math proficiency (compared to the 64% IA state average), while 74% of students have achieved reading proficiency (compared to the 70% IA state average).
What is the graduation rate of Johnston Senior High School?
The graduation rate of Johnston Senior High School is 96%, which is higher than the Iowa state average of 90%.
How many students attend Johnston Senior High School?
1,790 students attend Johnston Senior High School.
What is the racial composition of the student body?
69% of Johnston Senior High School students are White, 11% of students are Black, 8% of students are Hispanic, 7% of students are Asian, and 5% of students are Two or more races.
What is the student:teacher ratio of Johnston Senior High School?
Johnston Senior High School has a student ration of 20:1, which is higher than the Iowa state average of 14:1.
What grades does Johnston Senior High School offer ?
Johnston Senior High School offers enrollment in grades 10-12 (offers virtual instruction).
What school district is Johnston Senior High School part of?
Johnston Senior High School is part of Johnston Comm School District.
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