#1 Best Private Schools in Williamson County, TX
Sapientia Montessori School
Montessori school · Grades Pre-K–5
Growing: enrollment up 119% since 2011–12
Cedar Park, TX
AOverall grade68 students6 students per teacher
2026 lists
Best Private Schools in Williamson County, TX
Private schools in Williamson County, TX with the highest overall grades. Top 9 of 9 schools.
#2 Best Private Schools in Williamson County, TX
St. Dominic Savio Catholic High School
Diocesan school · Grades 9–12
95% of graduates go to four-year colleges
Austin, TX
AOverall grade414 students13 students per teacher
#3 Best Private Schools in Williamson County, TX
Community Montessori School
Montessori school · Grades Pre-K–8
The only Montessori school in Georgetown
Georgetown, TX
B+Overall grade118 students30 students per teacher
#4 Best Private Schools in Williamson County, TX
Round Rock Christian Academy
Christian school (nondenominational) · Grades Pre-K–12
The largest Christian school in Round Rock
Round Rock, TX
B+Overall grade670 students12 students per teacher
#5 Best Private Schools in Williamson County, TX
St. Helen Catholic School
Parish school · Grades Pre-K–8
The only Catholic school in Georgetown
Georgetown, TX
B+Overall grade171 students13 students per teacher
#6 Best Private Schools in Williamson County, TX
Holy Family Catholic School
Diocesan school · Grades Pre-K–8
Growing: enrollment up 32% since 2011–12
Austin, TX
B+Overall grade587 students23 students per teacher
#7 Best Private Schools in Williamson County, TX
Divine Savior Academy - Santa Rita Ranch
Lutheran (Wisconsin Synod) school · Grades Pre-K–8
Small classes: about 8 students per teacher
Liberty Hill, TX
BOverall grade260 students8 students per teacher
#8 Best Private Schools in Williamson County, TX
Zion Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–8
Growing: enrollment up 22% since 2013–14
Georgetown, TX
BOverall grade205 students10 students per teacher
#9 Best Private Schools in Williamson County, TX
Grace Academy of Georgetown
Christian school (nondenominational) · Grades K–12
Growing: enrollment up 109% since 2011–12
Georgetown, TX
B-Overall grade353 students12 students per teacher
Grades compare each school's official facts, such as class size, how long it has served families and where graduates go, with similar schools. They're a starting point: visit, ask questions and trust what you see.