Serving 313 students in grades 5-8, Cass Jr High School ranks in the top 20% of all schools in Illinois for overall test scores (math proficiency is top 30%, and reading proficiency is top 30%).
The percentage of students achieving proficiency in math is 39% (which is higher than the Illinois state average of 27%). The percentage of students achieving proficiency in reading/language arts is 48% (which is higher than the Illinois state average of 30%).
The student-teacher ratio of 12:1 is lower than the Illinois state level of 13:1.
Minority enrollment is 35% of the student body (majority Asian and Hispanic), which is lower than the Illinois state average of 55% (majority Hispanic).
Quick Facts (26-27)
- Grades: 5-8
- Enrollment: 313 students
- Student-Teacher Ratio: 12:1
- Minority Enrollment: 35%
- Overall Testing Rank: Top 20% in IL
- Math Proficiency: 39% (Top 30%)
- Reading Proficiency: 48% (Top 20%)
- Science Proficiency: 65-69% (Top 20%)
- Attendance Zone: Cass Jr High School's attendance zone covers the entire school district in Darien, IL, encompassing approximately 4.4 square miles. Typically, families can expect a drive of 5 to 10 minutes to the school, with the average distance from the school to the edge of the zone being 1.2 miles and the furthest edge located about 1.9 miles away.
- Source: National Center for Education Statistics (NCES), IL Dept. of Education
Top Rankings
Cass Jr High School ranks among the top 20% of public schools in Illinois for:
Category
Attribute
Overall Rank
Reading/Language Arts Proficiency
Science Proficiency
School Overview
Cass Jr High School's student population of 313 students has declined by 9% over five school years.
The teacher population of 26 teachers has grown by 30% over five school years.
Grades Offered
Grades 5-8
Total Students
313 students
Showing 2016–2025. Full 39-year historical data available below ↓
Total Classroom Teachers
26 teachers
Showing 2015–2025. Full 39-year historical data available below ↓
School Calendar
School Motto
Where the Focus is on the Child
School Rankings
Cass Jr High School ranks within the top 20% of all 3,542 schools in Illinois (based off of combined math and reading proficiency testing data).
The diversity score of Cass Jr High School is 0.55, which is less than the diversity score at state average of 0.70. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#620 out of 3542 schools
(Top 20%)
(Top 20%)
Showing 2013–2023. Full 14-year historical data available below ↓
Math Test Scores (% Proficient)
39%
27%
Showing 2012–2023. Full 14-year historical data available below ↓
Reading/Language Arts Test Scores (% Proficient)
48%
30%
Showing 2012–2022. Full 13-year historical data available below ↓
Science Test Scores (% Proficient)
65-69%
50%
Student-Teacher Ratio
12:1
13:1
Showing 2015–2025. Full 39-year historical data available below ↓
Asian
13%
6%
Showing 2016–2025. Full 38-year historical data available below ↓
Hispanic
12%
29%
Showing 2016–2025. Full 38-year historical data available below ↓
Black
4%
16%
Showing 2016–2025. Full 38-year historical data available below ↓
White
65%
45%
Showing 2016–2025. Full 38-year historical data available below ↓
Two or more races
6%
4%
Showing 2015–2025. Full 15-year historical data available below ↓
All Ethnic Groups
Showing 2016–2025. Full 38-year historical data available below ↓
Chronically Absent Students
(22-23)17.6%
29.7%
Eligible for Free Lunch
12%
43%
Showing 2015–2025. Full 15-year historical data available below ↓
Eligible for Reduced Lunch
4%
4%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), IL Dept. of Education
Frequently Asked Questions
What is Cass Jr High School's ranking?
Cass Jr High School is ranked #620 out of 3,542 schools, which ranks it among the top 20% of public schools in Illinois.
What schools are Cass Jr High School often compared to?
Cass Jr High Schoolis often viewed alongside schools like Eisenhower Jr High School, Gower Middle School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
39% of students have achieved math proficiency (compared to the 27% IL state average), while 48% of students have achieved reading proficiency (compared to the 30% IL state average).
How many students attend Cass Jr High School?
313 students attend Cass Jr High School.
What is the racial composition of the student body?
65% of Cass Jr High School students are White, 13% of students are Asian, 12% of students are Hispanic, 6% of students are Two or more races, and 4% of students are Black.
What is the student-teacher ratio of Cass Jr High School?
Cass Jr High School has a student ration of 12:1, which is lower than the Illinois state average of 13:1.
What grades does Cass Jr High School offer ?
Cass Jr High School offers enrollment in grades 5-8
What school district is Cass Jr High School part of?
Cass Jr High School is part of Cass SD 63 School District.
School Reviews
5 10/10/2025
Challenging Curriculum; and Outstanding Staff!
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