#1 Largest Private Schools in St. Clair County, MI
New Life Christian Academy
Christian school (nondenominational) · Grades Pre-K–12
186 students
Kimball, MI
B+Overall grade186 students9 students per teacher
2026 lists
Largest Private Schools in St. Clair County, MI
The private schools in St. Clair County, MI with the most students. Top 5 of 5 schools.
#2 Largest Private Schools in St. Clair County, MI
Cardinal Mooney Catholic
Diocesan school · Grades 9–12
168 students
Marine City, MI
B+Overall grade168 students11 students per teacher
#3 Largest Private Schools in St. Clair County, MI
Immaculate Conception School
Independent Catholic school · Grades Pre-K–8
148 students
Ira, MI
B-Overall grade148 students16 students per teacher
#4 Largest Private Schools in St. Clair County, MI
St. Edward On-The-Lake Catholic School
Diocesan school · Grades Pre-K–5
74 students
Lakeport, MI
A-Overall grade74 students11 students per teacher
#5 Largest Private Schools in St. Clair County, MI
St. Mary/Mccormick Catholic Academy
Diocesan school · Grades Pre-K–8
64 students
Port Huron, MI
AOverall grade64 students11 students per teacher
From official public records, updated October 2026.