#1 Largest Private Schools in Allentown, 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 Allentown, PA
The private schools in Allentown, PA with the most students. Top 8 of 8 schools.
#2 Largest Private Schools in Allentown, 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 Allentown, PA
Lehigh Christian Academy
Christian school (nondenominational) · Grades Pre-K–12
313 students
Allentown, PA
BOverall grade313 students11 students per teacher
#4 Largest Private Schools in Allentown, PA
St. John Vianney Regional School
Diocesan school · Grades Pre-K–8
209 students
Allentown, PA
AOverall grade209 students14 students per teacher
#5 Largest Private Schools in Allentown, PA
Cai Learning Academy
Independent school · Grades K–5
78 students
Allentown, PA
A-Overall grade78 students7 students per teacher
#6 Largest Private Schools in Allentown, 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
#7 Largest Private Schools in Allentown, PA
Mercy Special Learning Center
Parish school · Ungraded
46 students
Allentown, PA
B+Overall grade46 students7 students per teacher
#8 Largest Private Schools in Allentown, PA
Grace Montessori School
Episcopal · Montessori · Grades Pre-K–6
30 students
Allentown, PA
AOverall grade30 students5 students per teacher
From official public records, updated October 2026.