Centennial School

Centennial School is a mid-sized elementary school for students in Orland Park, Illinois. The school teaches pre-K through 2 and enrolls 392 students.

The district, Orland SD 135, has 5,186 students enrolled across 10 schools.

More than half of enrollment at Centennial School is White: 76%. The next largest groups are 10% Hispanic, 5% Black, 5% multiracial, and 4% Asian. The school's White share is 32 points above the 44% share among Cook County residents. Measured by the diversity index, the student body scores 41%.

The school lists 35.8 full-time-equivalent teachers and a student-to-teacher ratio of 10.9:1. Statewide, elementary schools in Illinois average 13.9:1.

In the wider Cook County area, the median household earns about $83,498 a year, a bachelor's degree or higher is held by about 43% of adults, and the share of residents below the poverty line is 10%. Centennial School shares Cook County with 1,405 other public schools.

Orland Park Elementary School sits about 1.8 miles from Centennial School. Around the school, at least 8 other public schools are within five miles.

The school's setting, by NCES definition, is Suburb: Large: in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.

Federal enrollment counts increased from 350 (2020-21) to 392 (2024-25).

Anyone can start a thread about open houses, carpools, and field trips at Centennial School. Parents, students, alumni, and staff are welcome to post.