#1 Largest Private Schools in Lehigh County, PA
Allentow Central Catholic High School.
Diocesan school · Grades 9–12
627 students
Allentown, PA
AOverall grade627 students13 students per teacher
2026 lists
Largest Private Schools in Lehigh County, PA
The private schools in Lehigh County, PA with the most students. Top 20 of 20 schools.
#2 Largest Private Schools in Lehigh County, PA
St. Thomas More School
Parish school · Grades Pre-K–8
489 students
Allentown, PA
A-Overall grade489 students13 students per teacher
#3 Largest Private Schools in Lehigh County, PA
St. Joseph the Worker School
Parish school · Grades Pre-K–8
366 students
Orefield, PA
B+Overall grade366 students14 students per teacher
#4 Largest Private Schools in Lehigh County, PA
Lehigh Christian Academy
Christian school (nondenominational) · Grades Pre-K–12
313 students
Allentown, PA
BOverall grade313 students11 students per teacher
#5 Largest Private Schools in Lehigh County, PA
St. Michael the Archangel School
Diocesan school · Grades Pre-K–8
249 students
Bethlehem, PA
A+Overall grade249 students6 students per teacher
#6 Largest Private Schools in Lehigh County, PA
St. Michael the Archangel School
Diocesan school · Grades Pre-K–8
248 students
Bethlehem, PA
B-Overall grade248 students14 students per teacher
#7 Largest Private Schools in Lehigh County, PA
St. John Vianney Regional School
Diocesan school · Grades Pre-K–8
209 students
Allentown, PA
AOverall grade209 students14 students per teacher
#8 Largest Private Schools in Lehigh County, PA
Salem Christian School
Baptist school · Grades K–12
182 students
Macungie, PA
BOverall grade182 students10 students per teacher
#9 Largest Private Schools in Lehigh County, PA
Kidspeace National Centers
Special education school · Grades 2–12
150 students
Orefield, PA
BOverall grade150 students7 students per teacher
#10 Largest Private Schools in Lehigh County, PA
Kids Peace Athlete Center School
Special education school · Ungraded
150 students
Orefield, PA
AOverall grade150 students5 students per teacher
#11 Largest Private Schools in Lehigh County, PA
Cai Learning Academy
Independent school · Grades K–5
78 students
Allentown, PA
A-Overall grade78 students7 students per teacher
#12 Largest Private Schools in Lehigh County, PA
Centennial School Lehigh Univ
Special education school · Grades 1–12
71 students
Bethlehem, PA
B+Overall grade71 students6 students per teacher
#13 Largest Private Schools in Lehigh County, PA
Jewish Day School of the Lehigh Valley
Jewish day school · Grades Pre-K–8
54 students
Allentown, PA
AOverall grade54 students4 students per teacher
#14 Largest Private Schools in Lehigh County, PA
Mercy Special Learning Center
Parish school · Ungraded
46 students
Allentown, PA
B+Overall grade46 students7 students per teacher
#15 Largest Private Schools in Lehigh County, PA
The Hillside School
Special education school · Grades 1–8
43 students
Macungie, PA
AOverall grade43 students3 students per teacher
#16 Largest Private Schools in Lehigh County, PA
Whitehall Christian School
Seventh-day Adventist school · Grades Pre-K–8
35 students
Whitehall, PA
AOverall grade35 students7 students per teacher
#17 Largest Private Schools in Lehigh County, PA
Grace Montessori School
Episcopal · Montessori · Grades Pre-K–6
30 students
Allentown, PA
AOverall grade30 students5 students per teacher
#18 Largest Private Schools in Lehigh County, PA
Emmaus Baptist Academy
Baptist school · Grades K–12
27 students
Emmaus, PA
AOverall grade27 students8 students per teacher
#19 Largest Private Schools in Lehigh County, PA
St. Stephens School
Early childhood program · Grades Pre-K–K
26 students
Whitehall, PA
B+Overall grade26 students13 students per teacher
#20 Largest Private Schools in Lehigh County, PA
St. John Neumann Regional School
Diocesan school · Grades K–2
25 students
Slatington, PA
AOverall grade25 students6 students per teacher
From official public records, updated October 2026.