#1 Private Schools with the Smallest Classes in Mercer County, PA
St. Michael School
Parish school · Grades Pre-K–7
5.9 students per teacher
Greenville, PA
A+Overall grade44 students6 students per teacher
2026 lists
Private Schools with the Smallest Classes in Mercer County, PA
Private schools in Mercer County, PA with the fewest students per teacher (not counting preschools and special education schools). Top 5 of 5 schools.
#2 Private Schools with the Smallest Classes in Mercer County, PA
Stoneboro Wesleyan Methodist School
Christian school (nondenominational) · Grades K–12
6.7 students per teacher
Stoneboro, PA
AOverall grade52 students7 students per teacher
#3 Private Schools with the Smallest Classes in Mercer County, PA
Kennedy Catholic Middle School High School
Diocesan school · Grades K–12
10.1 students per teacher
Hermitage, PA
BOverall grade278 students10 students per teacher
#4 Private Schools with the Smallest Classes in Mercer County, PA
St. John Paul II Elementary
Diocesan school · Grades Pre-K–6
11.9 students per teacher
Hermitage, PA
AOverall grade128 students12 students per teacher
#5 Private Schools with the Smallest Classes in Mercer County, PA
Grove City Christian Academy
Christian school (nondenominational) · Grades Pre-K–12
13.5 students per teacher
Grove City, PA
B-Overall grade253 students14 students per teacher
From official public records, updated October 2026.