#1 Fastest-Growing Private Schools in Austin, TX
The Magellan International School
Independent school · Grades Pre-K–8
Enrollment up 298% in about a decade
Austin, TX
A+Overall grade442 students5 students per teacher
2026 lists
Fastest-Growing Private Schools in Austin, TX
Private schools in Austin, TX whose enrollment has grown the most over the past decade. Top 12 of 12 schools.
#2 Fastest-Growing Private Schools in Austin, TX
St. Gabriel's Catholic School
Independent Catholic school · Grades Pre-K–12
Enrollment up 155% in about a decade
Austin, TX
A+Overall grade873 students8 students per teacher
#3 Fastest-Growing Private Schools in Austin, TX
Griffin School
Independent school · Grades 9–12
Enrollment up 139% in about a decade
Austin, TX
A+Overall grade160 students5 students per teacher
#4 Fastest-Growing Private Schools in Austin, TX
Austin Peace Academy
Islamic school · Grades Pre-K–12
Enrollment up 127% in about a decade
Austin, TX
A+Overall grade708 students8 students per teacher
#5 Fastest-Growing Private Schools in Austin, TX
Austin International School
Independent school · Grades Pre-K–8
Enrollment up 95% in about a decade
Austin, TX
A-Overall grade222 students7 students per teacher
#6 Fastest-Growing Private Schools in Austin, TX
Headwaters School
Montessori school · Grades Pre-K–12
Enrollment up 89% in about a decade
Austin, TX
B+Overall grade411 students8 students per teacher
#7 Fastest-Growing Private Schools in Austin, TX
Cathedral School of St. Mary
Diocesan school · Grades Pre-K–8
Enrollment up 51% in about a decade
Austin, TX
BOverall grade153 students13 students per teacher
#8 Fastest-Growing Private Schools in Austin, TX
St. Dominic Savio Catholic High School
Diocesan school · Grades 9–12
Enrollment up 48% in about a decade
Austin, TX
AOverall grade414 students13 students per teacher
#9 Fastest-Growing Private Schools in Austin, TX
Ahb Community School
Alternative school · Grades K–8
Enrollment up 38% in about a decade
Austin, TX
B+Overall grade87 students10 students per teacher
#10 Fastest-Growing Private Schools in Austin, TX
Holy Family Catholic School
Diocesan school · Grades Pre-K–8
Enrollment up 32% in about a decade
Austin, TX
B+Overall grade587 students23 students per teacher
#11 Fastest-Growing Private Schools in Austin, TX
Regents School of Austin
Christian school (nondenominational) · Grades K–12
Enrollment up 14% in about a decade
Austin, TX
AOverall grade1,073 students10 students per teacher
#12 Fastest-Growing Private Schools in Austin, TX
Paragon Preparatory
Independent school · Grades Pre-K–8
Enrollment up 11% in about a decade
Austin, TX
A+Overall grade167 students6 students per teacher
From official public records, updated October 2026.