#49 Best Private High Schools in Illinois
First Baptist Academy
Baptist school · Grades K–12
97% of graduates go to four-year colleges
O'Fallon, IL
A-Overall grade310 students10 students per teacher
2026 lists
Best Private High Schools in Illinois
Private high schools in Illinois with the highest overall grades. Top 50 of 121 schools.
#50 Best Private High Schools in Illinois
Marmion Academy
Independent Catholic school · Grades 9–12
The only all-boys school in Aurora
Aurora, IL
A-Overall gradeAll boys423 students13 students per teacher
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.