#1 Largest Private Schools in Sangamon County, IL
Sacred Heart Griffin High School
Independent Catholic school · Grades 9–12
526 students
Springfield, IL
B-Overall grade526 students16 students per teacher
2026 lists
Largest Private Schools in Sangamon County, IL
The private schools in Sangamon County, IL with the most students. Top 14 of 14 schools.
#2 Largest Private Schools in Sangamon County, IL
Christ the King Elementary School
Diocesan school · Grades Pre-K–8
430 students
Springfield, IL
A-Overall grade430 students12 students per teacher
#3 Largest Private Schools in Sangamon County, IL
Christ the King
Parish school · Grades Pre-K–8
426 students
Springfield, IL
B-Overall grade426 students18 students per teacher
#4 Largest Private Schools in Sangamon County, IL
Springfield Christian School
Christian school (nondenominational) · Grades K–8
396 students
Springfield, IL
B-Overall grade396 students16 students per teacher
#5 Largest Private Schools in Sangamon County, IL
Blessed Sacrament
Diocesan school · Grades Pre-K–8
370 students
Springfield, IL
B+Overall grade370 students13 students per teacher
#6 Largest Private Schools in Sangamon County, IL
Calvary Academy
Assembly of God school · Grades Pre-K–12
252 students
Springfield, IL
BOverall grade252 students11 students per teacher
#7 Largest Private Schools in Sangamon County, IL
Little Flower Catholic School
Diocesan school · Grades Pre-K–8
210 students
Springfield, IL
B-Overall grade210 students19 students per teacher
#8 Largest Private Schools in Sangamon County, IL
St. Agnes Elementary School
Diocesan school · Grades Pre-K–8
160 students
Springfield, IL
A+Overall grade160 students10 students per teacher
#9 Largest Private Schools in Sangamon County, IL
Our Savior's Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–8
156 students
Springfield, IL
BOverall grade156 students12 students per teacher
#10 Largest Private Schools in Sangamon County, IL
Trinty
Lutheran (Missouri Synod) school · Grades Pre-K–8
142 students
Springfield, IL
A+Overall grade142 students8 students per teacher
#11 Largest Private Schools in Sangamon County, IL
Lutheran High School
Lutheran (Missouri Synod) school · Grades 9–12
115 students
Springfield, IL
BOverall grade115 students9 students per teacher
#12 Largest Private Schools in Sangamon County, IL
Lutheran High School
Lutheran (Missouri Synod) school · Grades 9–12
111 students
Springfield, IL
B-Overall grade111 students15 students per teacher
#13 Largest Private Schools in Sangamon County, IL
St. Aloysius Elementary School
Parish school · Grades Pre-K–8
104 students
Springfield, IL
A+Overall grade104 students10 students per teacher
#14 Largest Private Schools in Sangamon County, IL
St. Patrick Catholic School
Independent Catholic school · Grades Pre-K–5
44 students
Springfield, IL
A+Overall grade44 students7 students per teacher
From official public records, updated October 2026.