#1 Best Private High Schools in Cook County, IL
Trinity High School
Independent Catholic school · Grades 9–12
100% of graduates go to four-year colleges
Chicago, IL
A+Overall gradeAll girls316 students11 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.
#2 Best Private High Schools in Cook County, IL
Gems World Academy Chicago
Independent school · Grades Pre-K–12
Smaller classes than 82% of independent schools in Illinois
Chicago, IL
A+Overall grade196 students3 students per teacher
#3 Best Private High Schools in Cook County, IL
North Shore Country Day School
Independent school · Grades Pre-K–12
The only independent school in Winnetka
Winnetka, IL
A+Overall grade510 students6 students per teacher
#4 Best Private High Schools in Cook County, IL
Roycemore School
Independent school · Grades Pre-K–12
The largest independent school in Evanston
Evanston, IL
A+Overall grade224 students5 students per teacher
#5 Best Private High Schools in Cook County, IL
Regina Dominican HS
Independent Catholic school · Grades 9–12
The only all-girls school in Wilmette
Wilmette, IL
A+Overall gradeAll girls200 students8 students per teacher
#6 Best Private High Schools in Cook County, IL
Mount Carmel High School
Independent Catholic school · Grades 9–12
94% of graduates go to four-year colleges
Chicago, IL
A+Overall gradeAll boys588 students11 students per teacher
#7 Best Private High Schools in Cook County, IL
Josephinum Academy of the Sacred Heart
Independent Catholic school · Grades 9–12
Smaller classes than 98% of Catholic schools in Illinois
Chicago, IL
A+Overall gradeAll girls90 students5 students per teacher
#8 Best Private High Schools in Cook County, IL
Fenwick High School
Parish school · Grades 9–12
The largest Catholic school in Oak Park
Oak Park, IL
A+Overall grade1,024 students12 students per teacher
#9 Best Private High Schools in Cook County, IL
Depaul College Prep
Independent Catholic school · Grades 9–12
One of the 3 largest Catholic schools in Illinois
Chicago, IL
A+Overall grade1,245 students11 students per teacher
#10 Best Private High Schools in Cook County, IL
Lycee Francais De Chicago
Independent school · Grades Pre-K–12
98% of graduates go to four-year colleges
Chicago, IL
A+Overall grade687 students6 students per teacher
#11 Best Private High Schools in Cook County, IL
Christian Heritage Academy
Christian school (nondenominational) · Grades Pre-K–12
91% of graduates go to four-year colleges
Northfield, IL
A+Overall grade441 students9 students per teacher
#12 Best Private High Schools in Cook County, IL
Univ of Chicago Lab School
Independent school · Grades Pre-K–12
One of the 3 largest independent schools in Illinois
Chicago, IL
A+Overall grade1,946 students8 students per teacher
#13 Best Private High Schools in Cook County, IL
Willows Academy
Independent Catholic school · Grades 6–12
The only Catholic school in Des Plaines
Des Plaines, IL
A+Overall gradeAll girls241 students9 students per teacher
#14 Best Private High Schools in Cook County, IL
Loyola Academy
Independent Catholic school · Grades 9–12
The largest of 344 Catholic schools in Illinois
Wilmette, IL
A+Overall grade1,947 students11 students per teacher
#15 Best Private High Schools in Cook County, IL
Holy Trinity High School
Independent Catholic school · Grades 9–12
Smaller classes than 61% of Catholic schools in Illinois
Chicago, IL
A+Overall grade292 students12 students per teacher
#16 Best Private High Schools in Cook County, IL
Beacon Academy
Independent school · Grades 9–12
100% of graduates go to four-year colleges
Evanston, IL
A+Overall grade155 students7 students per teacher
#17 Best Private High Schools in Cook County, IL
Mother McAuley Liberal Arts High School
Independent Catholic school · Grades 9–12
92% of graduates go to four-year colleges
Chicago, IL
AOverall gradeAll girls794 students13 students per teacher
#18 Best Private High Schools in Cook County, IL
Fasman Yeshiva High School
Jewish day school · Grades 9–12
Smaller classes than 92% of Jewish day schools in Illinois
Skokie, IL
AOverall gradeAll boys103 students4 students per teacher
#19 Best Private High Schools in Cook County, IL
The Chicago Academy for the Arts
Independent school · Grades 9–12
Smaller classes than 83% of independent schools nationwide
Chicago, IL
AOverall grade148 students4 students per teacher
#20 Best Private High Schools in Cook County, IL
Hinsdale Adventist Academy
Seventh-day Adventist school · Grades Pre-K–12
Serving families in Hinsdale since at least 2011
Hinsdale, IL
AOverall grade160 students11 students per teacher
#21 Best Private High Schools in Cook County, IL
Ida Crown Jewish Academy
Jewish day school · Grades 9–12
100% of graduates go to four-year colleges
Skokie, IL
AOverall grade228 students6 students per teacher
#22 Best Private High Schools in Cook County, IL
Chicago Hope Academy
Christian school (nondenominational) · Grades 9–12
The largest Christian school in Chicago
Chicago, IL
AOverall grade291 students12 students per teacher
#23 Best Private High Schools in Cook County, IL
St. Francis De Sales High School
Independent Catholic school · Grades 9–12
Smaller classes than 76% of Catholic schools in Illinois
Chicago, IL
A-Overall grade155 students10 students per teacher
#24 Best Private High Schools in Cook County, IL
Bennett Day School
Independent school · Grades Pre-K–12
100% of graduates go to four-year colleges
Chicago, IL
A-Overall grade285 students6 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.