#1 Best Private Schools in Yellowstone County, MT
Billings Central Catholic High School
Diocesan school · Grades 3–12
Smaller classes than 95% of Catholic schools nationwide
Billings, MT
A+Overall grade344 students5 students per teacher
2026 lists
Best Private Schools in Yellowstone County, MT
Private schools in Yellowstone County, MT with the highest overall grades. Top 5 of 5 schools.
#2 Best Private Schools in Yellowstone County, MT
Billings Christian School
Christian school (nondenominational) · Grades Pre-K–12
The largest of 39 Christian schools in Montana
Billings, MT
A+Overall grade443 students8 students per teacher
#3 Best Private Schools in Yellowstone County, MT
Grace Montessori Academy
Christian (nondenominational) · Montessori · Grades Pre-K–8
Growing: enrollment up 153% since 2011–12
Billings, MT
BOverall grade91 students9 students per teacher
#4 Best Private Schools in Yellowstone County, MT
St. Francis Catholic School
Diocesan school · Grades K–8
The largest of 22 Catholic schools in Montana
Billings, MT
B-Overall grade603 students13 students per teacher
#5 Best Private Schools in Yellowstone County, MT
Trinity Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–8
Serving families in Billings since at least 2011
Billings, MT
B-Overall grade219 students21 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.