Olive-Mary Stitt School

Located at 303 E Olive St, in Arlington Heights, Illinois, Olive-Mary Stitt School is a heavily attended elementary campus that works with 671 students (grades K through 5), run under Arlington Heights SD 25. Compared to the state average of about 381 students per school, that is 76% above typical.

Across the 9 schools in Arlington Heights SD 25 (5,423 students total), Olive-Mary Stitt School accounts for its share of the district's footprint.

For racial and ethnic makeup, Olive-Mary Stitt School lists that 80% of the student body identifies as White. Other groups include 9% Hispanic, 9% Asian, 2% Black. By comparison, Cook County as a whole is about 44% White, so the school skews noticeably more White than its surroundings.

On the income-and-resources front, The school reports having 48 full-time-equivalent teachers, for a student-teacher ratio near 14.0:1. The state averages about 13.9:1, putting this campus right in line with peers. About 6% of enrolled students meet the income threshold for free or reduced-price lunch, a number frequently used as a low-income enrollment indicator. That share is below Cook County's rate of about 66%.

Adjusting for the school's free-and-reduced-lunch share, Olive-Mary Stitt School performs roughly as the BeatsExpectations model predicts for a school with this FRL share. The predicted value is around 67.8%, the actual is 71.8%, a residual of +4.0 points.

In the area at large, community-level numbers for Cook County indicate median household income runs about $83,498, roughly 43% of adults have completed at least a four-year degree, and roughly 10% of residents live below the federal poverty line. Across Cook County's 1406 public schools (combined enrollment of about 697,934 students), Olive-Mary Stitt School is one campus in the mix.

The closest other public school is Thomas Middle School, roughly 0.2 miles away. Within five miles, there are 8 other public schools. Among the 8 schools in that immediate cluster with test data (this one included), Olive-Mary Stitt School ranks 3rd on composite proficiency, above the local average of 68.1%.

The school occupies an outer-ring site.

Looking at the recent track record. Over the past 7-year window, the student count rose 11%: 605 students in 2018 compared to 671 in 2025. The student-to-teacher ratio fell from 16.3:1 in 2018 to 14.0:1 today.

On the community side, the page collects discussion, questions, and updates around classroom updates, athletics, and weather closures. Parents, students, alumni, and staff are welcome to weigh in.