Devonshire School
Test scores
IAR + ISA 2024-25 . % Proficient (Levels 4-5)What this means: On the IAR + ISA, Illinois's statewide test, about 51 of every 100 students at this school read and write at grade level and about 44 of 100 do math at grade level. Across all Illinois schools, those numbers are about 51 and 38. Reading and writing scores are up about 8 points since 2023, while math scores are up about 7 points.
BeatsExpectations
Demographically-adjusted score · methodologyWhat this means: About 47% of students here test proficient in math and reading, compared with the roughly 36% typical for Illinois schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among Illinois's top nor bottom 10%.
7-year change
SY 2017-18 vs SY 2024-25About Devonshire School
Devonshire School, a middle-of-the-pack elementary-level community in Des Plaines, Illinois, one of the schools within Comm Cons SD 59, hosts 370 students, covering grades K through 5.
Devonshire School is one of 15 schools operated by Comm Cons SD 59, a district that instructs 5,869 students overall.
On demographics, Devonshire School reports that the largest single group is White at 38%, but no single group is in the majority. The remainder reads as 27% Asian, 25% Hispanic, 5% Black, 5% multiracial.
On the income-and-resources front, On paper, Devonshire School has 30 full-time-equivalent teachers, translating to a class-load average of around 12.4:1. Statewide, the average ratio sits near 13.9:1, putting Devonshire School tighter than the state norm the norm. Around 61% of the student body qualifies for free or reduced-price meals, often used as a Title I proxy.
On a residual basis (actual vs predicted given the student mix), Devonshire School sits in the middle band of the BeatsExpectations distribution. Schools with this campus's student mix typically land near 36.2%; this one delivers 46.8%.
In the broader community, community-level numbers for Cook County indicate median household income runs about $83,498, 43% of adults hold a bachelor's degree or higher, and census figures put the poverty rate at about 10%. In all, Cook County runs 1406 public schools (combined enrollment of about 697,934 students), of which Devonshire School is one.
Friendship Jr High School is the nearest neighboring public school, about 0.5 miles from this campus. Within five miles, there are 8 other public schools. Among the 8 schools in that immediate cluster with test data (this one included), Devonshire School ranks 6th on composite proficiency, beneath the local average of 50.6%.
The campus sits in a high-density setting.
Looking at the recent track record. Looking back 7 years, enrollment at Devonshire School has shrank 18%, going from 449 students in 2018 to 370 in 2025. The Asian share of enrollment edged up from 18% to 27% over that span. Class-load math has pulled in: from 15.2:1 in 2018 to 12.4:1 in 2025.
Within the allk12 community for this school, the feed for Devonshire School typically covers classroom updates, athletics, and weather closures. The community welcomes input from current and former families.
Cook County at a glance
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