#25 Best Private High Schools in Cook County, IL
Northridge Preparatory School
Independent Catholic school · Grades 6–12
The only all-boys school in Niles
Niles, IL
A-Overall gradeAll boys351 students13 students per teacher
2026 lists
Best Private High Schools in Cook County, IL
Private high schools in Cook County, IL with the highest overall grades. Top 50 of 57 schools.
Grades compare each school's official facts, such as class size, how long it has served families and where graduates go, with similar schools. They're a starting point: visit, ask questions and trust what you see.