Cass Jr High School
🇺🇸 Official data · 2025Darien, Illinois 60561 · Cass SD 63
#75 of 670 middle schools in Illinois
#2770 of 15,369 nationally
About Cass Jr High School
Cass Jr High School is a public middle located in Darien, in the Cass SD 63 school district of Illinois, United States. It caters for Grades 5–8. In 2025 it enrolled 313 students. Traditional public schools run by a school district; free to attend.
Its Success Index (US) is 72.8 out of 100, placing it in the top 25% of middle schools in United States and 75th of 670 ranked middle schools in Illinois. Its strongest component is community advantage (fewer free/reduced-price lunch) (87th percentile), and its weakest is math proficiency (55th percentile).
Other published figures: enrollment 313.
There are 7 schools in Darien; Cass Jr High School ranks 3rd of 7 scored schools there.
Success Index (US) breakdown
Each component is a percentile against middle schools across United States.
- Math proficiency (30%)45%
- Reading proficiency (30%)63%
- Community advantage (fewer free/reduced-price lunch) (25%)24%
- Students per teacher (15%)12.0
The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for Cass Jr High School by the official sources.
- Enrollment
- 313
- Students enrolled in the latest NCES directory year.
- Free/reduced-price lunch
- 24%
- Share of students eligible for free or reduced-price lunch.
- Students per teacher
- 12.0
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 63%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 45%
- Share of tested students proficient or above (all students, all grades).
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Schools near Cass Jr High School
Closest schools by straight-line distance, with their Success Index (US).
Concord Elem School
Darien · Public elementary · Grades PK–4
460 students · 1.2 km away
Prairieview Elementary School
Downers Grove · Public elementary · Grades 3–5
380 students · 1.8 km away
Lakeview Jr High School
Downers Grove · Public middle · Grades 6–8
340 students · 1.9 km away
Elizabeth Ide Elem School
Darien · Public elementary · Grades PK–2
410 students · 1.9 km away
Eisenhower Jr High School
Darien · Public middle · Grades 6–8
407 students · 2.2 km away
Lace Elem School
Darien · Public elementary · Grades 3–5
377 students · 2.3 km away
Gower West Elem School
Willowbrook · Public elementary · Grades PK–4
531 students · 2.7 km away
Anne M Jeans Elem School
Willowbrook · Public elementary · Grades PK–4
277 students · 2.7 km away
Hinsdale South High School
Darien · Public high · Grades 9–12
1,370 students · 3.2 km away
Mark DeLay School
Darien · Public elementary · Grades PK–2
453 students · 3.6 km away
Similar schools
Public middle schools in Illinois with a comparable Enrollment.
Beverly Manor Elementary School
Washington · Public middle · Grades 4–8
315 students
Calumet Elem School
Calumet Park · Public middle · Grades 6–8
316 students
Massac Jr High School
Metropolis · Public middle · Grades 7–8
309 students
Central Intermediate School
Monmouth · Public middle · Grades 4–6
318 students
Central Jr High School
Belleville · Public middle · Grades 7–8
308 students
Reservoir Gifted School
Peoria · Public middle · Grades 5–8
308 students
Frequently asked questions
Is Cass Jr High School a good school?
Cass Jr High School has a Success Index (US) of 72.8 out of 100 (Top 25% of middle schools in United States) and ranks #75 of 670 in Illinois. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does Cass Jr High School rank in Illinois?
Cass Jr High School ranks #75 of 670 middle schools in Illinois and #2770 of 15,369 nationally on the Success Index (US) (2025 data).
How many students attend Cass Jr High School?
Cass Jr High School had 313 students in 2025.
Is Cass Jr High School a elementary school or a high school?
Cass Jr High School is classified as a middle covering Grades 5–8. It is a public school.
What other schools are near Cass Jr High School?
There are 10 schools within 15 km of Cass Jr High School; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.