#25 Largest Private Schools in Austin, TX
Cathedral School of St. Mary
Diocesan school · Grades Pre-K–8
153 students
Austin, TX
BOverall grade153 students13 students per teacher
2026 lists
Largest Private Schools in Austin, TX
The private schools in Austin, TX with the most students. Top 50 of 58 schools.
From official public records, updated October 2026.