#1 Best Private High Schools in Denver, CO
Bishop Machebeuf High School
Diocesan school · Grades 9–12
Smaller classes than 86% of Catholic schools nationwide
Denver, CO
A+Overall grade164 students8 students per teacher
2026 lists
Best Private High Schools in Denver, CO
Private high schools in Denver, CO with the highest overall grades. Top 6 of 6 schools.
#2 Best Private High Schools in Denver, CO
Denver Jewish Day School
Jewish day school · Grades Pre-K–12
The largest Jewish school in Denver
Denver, CO
A+Overall grade316 students5 students per teacher
#3 Best Private High Schools in Denver, CO
Mullen High School
Independent Catholic school · Grades 9–12
The largest of 47 Catholic schools in Colorado
Denver, CO
A+Overall grade753 students13 students per teacher
#4 Best Private High Schools in Denver, CO
Colorado Academy
Independent school · Grades Pre-K–12
The largest of 46 independent schools in Colorado
Denver, CO
BOverall grade1,009 students
#5 Best Private High Schools in Denver, CO
Denver Academy
Independent school · Grades 2–12
Growing: enrollment up 22% since 2011–12
Denver, CO
B-Overall grade457 students7 students per teacher
#6 Best Private High Schools in Denver, CO
Arrupe Jesuit High School
Independent Catholic school · Grades 9–12
Growing: enrollment up 25% since 2011–12
Denver, CO
B-Overall grade413 students17 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.