Community prompt from u/allk12. Replies below.
Dryden Elem School
Test scores
IAR + ISA 2024-25 . % Proficient (Levels 4-5)What this means: On the IAR + ISA, Illinois's statewide test, about 74 of every 100 students at this school read and write at grade level and about 66 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 9 points since 2023, while math scores are up about 19 points.
BeatsExpectations
Demographically-adjusted score · methodologyWhat this means: About 68% of students here test proficient in math and reading, compared with the roughly 59% 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 Dryden Elem School
Set in Arlington Heights, Illinois, Dryden Elem School is a middle-of-the-pack elementary school, operated by Arlington Heights SD 25. It teaches 521 students across grades K through 5. By comparison, Illinois's public schools average about 381 students each, so Dryden Elem School sits 37% above that benchmark.
Within Arlington Heights SD 25, which oversees 9 schools and 5,423 students, Dryden Elem School is one campus in the system.
On the student-mix side, Dryden Elem School reports that White students make up the majority at 79%. The remainder reads as 10% Hispanic, 9% Asian. That is meaningfully more White than the county at large, where the share is closer to 44%.
Looking at the economic backdrop, Staff filings list 40 full-time-equivalent teachers, which works out to roughly 13.2:1 students per teacher. That figure is tighter than the state norm's 13.9:1 average. An estimated 21% of students are eligible for free or reduced-price lunch, a number frequently used as a low-income enrollment indicator. Set against Cook County (around 66%), the school's rate is south of typical.
Adjusting for the school's free-and-reduced-lunch share, Dryden Elem School performs roughly as the BeatsExpectations model predicts for a school with this FRL share. The predicted value is around 59.3%, the actual is 68.0%, a residual of +8.7 points.
In the broader community, Cook County reports that the typical household earns roughly $83,498 per year, 43% of adults hold a bachelor's degree or higher, and the poverty rate sits near 10%. Dryden Elem School is one of 1406 public schools in Cook County (combined enrollment of about 697,934 students).
Nearest neighbor: Westbrook Early Learning Cntr, around 0.8 miles off. Within five miles, there are 8 other public schools. Ranking that nearby cluster on reported proficiency puts Dryden Elem School at 2nd of 6; the average score across the group is 55.0%.
Geographically, the school is in a bedroom-community area.
Over the past 7-year window. Looking back 7 years, enrollment at Dryden Elem School has rose 4%, going from 501 students in 2018 to 521 in 2025. The White share of enrollment decreased from 84% to 79% over that span. Class-load math has pulled in: from 15.4:1 in 2018 to 13.2:1 in 2025.
Inside the community feed, recent activity here tends to focus on enrollment questions, classroom assignments, and PTA news. The community welcomes input from current and former families.
Cook County at a glance
View full county profileQuick facts
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