Grade school districts in Oak Brook, Hinsdale and Naperville ranked among Illinois' highest for math aptitude, according to the Illinois State Board of Education.
As part of the annual Partnership For Assessment of Readiness for College and Careers ("PARCC") examination, Illinois public school students in grades three through eight are tested based on Common Core math standards.
The students pass if their scores either meet or exceed expectations, indicating they're "ready for the next level" of school.
Where did your school district rank?
100 Illinois districts with highest math scores