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Cass Junior High School

Public Grades 5-8
265th
SchoolDigger Rank ?
of 1,126 Illinois Middle Schools
Better than 76% of Illinois middle schools
Summary

Cass Junior High School in Darien, Illinois, serves grades 5–8 and enrolls 313 students in the Darien area, within Cass School District 63. The central finding for families is a clear academic contrast: Cass performs strongly in English language arts compared with the state, but math is a weaker point, especially against its district and many nearby schools.

In 2025–2026, 76% of Cass students were proficient in ELA, compared with 56% statewide and 74% in the district. Cass’s ELA result was close to the nearby-school average of 75%. In math, 48% were proficient—above the state’s 40%, but below the district’s 55% and the nearby-school average of 55%; only two nearby schools had lower reported results. Science was another positive against the state: grade 8 proficiency was 74%, versus 52% statewide, though Cass ranked fifth among 10 nearby schools with comparable results. Nearby schools serve different grade spans, and some comparison figures are suppressed.

Scores have risen since 2023–2024: ELA increased 9 percentage points to 76%, and math rose 10 points to 48%. But Cass’s ELA advantage over the state narrowed from 25 points to 20, while its math advantage edged down from 9 points to 8. SchoolDigger gives Cass four stars and ranks it 265th of 1,126 Illinois schools, at the 76th percentile; its overall percentile has declined 11 points from 87 in 2021–2022. Chronic absenteeism improved markedly, falling from 25% in 2021–2022 to 5% in 2025–2026, below every nearby school’s reported rate. The student-teacher ratio is 11.8, and 24% of students were free/reduced lunch eligible in 2024–2025. One subgroup result stands out: SchoolDigger’s measure of how well Cass serves Asian Students was at the 44th percentile in 2025–2026, compared with the school’s overall 76th percentile, down from 86 in 2021–2022.

313
Students ?
11.8
Student/teacher ratio ?
$17,269
Per pupil spending ?
24.0%
Free/reduced lunch eligible (2024-25) ?
96.4%
Measles protection (all grades) (2025-26)
 8502 Bailey Rd
       Darien, IL  60561-5333

(331) 481-4000

District: Cass School District 63


Feeder schools for Cass Junior High School:

Elementary:    Concord Elementary School
Racial breakdown:

White:
64.5%
Asian:
13.1%
Hispanic:
12.5%
more
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 Compare Cass Junior High School to nearby middle schools!
At a glance
▼ Ranking trend: Declining — 95th percentile in 2015 → 76th in 2026
Strengths
✓Test scores above the Illinois average (66% vs 49% meeting standards)
✓Ranks in the top 24% of Illinois middle schools
✓Small classes — about 12 students per teacher
Worth a look
!Ranking has slipped — down 19 percentile points since 2015
!Some student groups rank well below the school's overall statewide standing
Students meeting standards (2025-2026) ?
This school66%
District avg67%
Illinois avg49%
265th of 1,126
Illinois public middle schools ?
Top 24%▼ down 12 pts since 2016
From top 11% (2016) to top 24% (2026)
See the entire ranking list of Illinois Middle Schools →
★★★★★
SchoolDigger rating ?
140th of 738Cass School District 63 among Illinois districts
Statewide rank percentile over time (100 = the top-ranked school in the state; click a legend item to add a student group)
Show full rank history (all student groups)

All Students

YearAvg scoreStatewide rankIllinois percentileRating
202673.8265 of 112676.5%★★★★☆
202584.0192 of 136886.0%★★★★☆
202481.5212 of 136384.4%★★★★☆
202381.9198 of 136785.5%★★★★☆
202282.8179 of 136986.9%★★★★☆
201991.679 of 135694.2%★★★★★
201892.373 of 129394.4%★★★★★
201786.8144 of 129388.9%★★★★☆
201685.6143 of 129488.9%★★★★☆
201593.768 of 130294.8%★★★★★
201486.3132 of 132290.0%★★★★★
201389.587 of 136793.6%★★★★★
201282.1164 of 136588.0%★★★★☆
201181.1173 of 134487.1%★★★★☆
201087.845 of 132796.6%★★★★★
200981.6165 of 131887.5%★★★★☆
200884.1114 of 129391.2%★★★★★
200788.544 of 128796.6%★★★★★
200686.082 of 127293.6%★★★★★
200587.0101 of 120991.6%★★★★★
200488.487 of 120492.8%★★★★★
200386.6108 of 118590.9%★★★★★

Asian

YearAvg scoreStatewide rankIllinois percentileRating
202648.287 of 15443.5%★★☆☆☆
202375.138 of 19280.2%★★★★☆
202283.327 of 19886.4%★★★★☆
201975.236 of 20182.1%★★★★☆
201874.339 of 20981.3%★★★★☆

Female

YearAvg scoreStatewide rankIllinois percentileRating
202678.9140 of 86783.9%★★★★☆
202582.6180 of 124885.6%★★★★☆
202483.5164 of 125186.9%★★★★☆
202375.1251 of 127580.3%★★★★☆
202278.4226 of 128682.4%★★★★☆
201992.363 of 127695.1%★★★★★
201890.872 of 122694.1%★★★★★

Hispanic

YearAvg scoreStatewide rankIllinois percentileRating
202445.7303 of 64352.9%★★★☆☆
202356.5222 of 66166.4%★★★☆☆
202240.8367 of 66244.6%★★☆☆☆

Low Socio Economic Status

YearAvg scoreStatewide rankIllinois percentileRating
202579.2149 of 122987.9%★★★★☆
202485.090 of 121992.6%★★★★★
202387.070 of 123494.3%★★★★★
202275.7163 of 122186.7%★★★★☆
201985.782 of 121793.3%★★★★★
201881.2120 of 116189.7%★★★★☆

Male

YearAvg scoreStatewide rankIllinois percentileRating
202665.3257 of 82969.0%★★★☆☆
202582.8186 of 127185.4%★★★★☆
202476.4241 of 126480.9%★★★★☆
202384.5156 of 129287.9%★★★★☆
202283.9143 of 128688.9%★★★★☆
201989.5101 of 129692.2%★★★★★
201890.779 of 122393.5%★★★★★

White

YearAvg scoreStatewide rankIllinois percentileRating
202656.5295 of 75460.9%★★★☆☆
202565.3269 of 88469.6%★★★☆☆
202466.5250 of 87571.4%★★★★☆
202361.8284 of 89568.3%★★★☆☆
202269.1225 of 89874.9%★★★★☆
201984.588 of 90590.3%★★★★★
201883.497 of 88989.1%★★★★☆
How student groups rank statewide ? (each group's percentile vs the same group at other schools — higher is better; the +/- beside each compares the group with this school's overall percentile)
Low Socio Economic Status (2025)88th percentile~ school
Female (2026)84th percentile+7 vs school
Male (2026)69th percentile-7 vs school
White (2026)61st percentile-16 vs school
Hispanic (2024)53rd percentile-32 vs school
Asian (2026)44th percentile-33 vs school
By subject vs Illinois (2025-2026) ?
English Language Arts76%+20 vs state
Science69%+20 vs state
Mathematics48%+8 vs state

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Frequently Asked Questions about Cass Junior High School

Students at Cass Junior High School are 65% White, 13% Asian, 12% Hispanic, 6% Two or more races, 4% African American.

Cass Junior High School ranks 265th of 1126 Illinois middle schools. SchoolDigger rates this school 4 stars out of 5.

In the 2024-25 school year, 313 students attended Cass Junior High School.

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Latest Illinois data All new data »
2025–26 school spending dataOct 30, 2026
2025–26 attendance data, dropout rates & graduation ratesOct 30, 2026
2025–26 ACT, IAR, ISA & PreACT Secure test scoresOct 30, 2026
2013–14 through 2025–26 immunization rates (updated)Oct 19, 2026


SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau, the Illinois Department of Public Health and the Illinois State Board of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.

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