For the 2025 school year, there are 32 private schools serving 3,941 students in St. Clair County, IL (there are 94 public schools, serving 39,299 public students). 9% of all K-12 students in St.
Clair County, IL are educated in private schools (compared to the IL state average of 12%).
The top ranked private schools in St. Clair County, IL include Althoff Catholic High School, St. Clare Catholic School, and Zion Lutheran School.
The average tuition cost is $5,555, which is lower than the Illinois private school average tuition cost of $12,761.
Top Ranked St. Clair County Private Schools (2025)
School
Location
Quick Facts
Althoff Catholic High School![Althoff Catholic High School Photo]( "Althoff Catholic High School Photo")
(Catholic)
5401 W Main St
Belleville, IL 62226
(618) 235-1100
Belleville, IL 62226
(618) 235-1100
Gr: 9-12 | 323 students Avg. class size: 15 students Sports: 15 | Extracurrculars: 9 Tuition & acceptance rate listed
1111 E Highway 50
O Fallon, IL 62269
(618) 726-6040
O Fallon, IL 62269
(618) 726-6040
Gr: K-12 | 281 students Avg. class size: 20 students Sports: 5 Tuition & acceptance rate listed
Holy Trinity Catholic School
(Catholic)
504 Fountains Pkwy
Fairview Heights, IL 62208
(618) 628-7395
Fairview Heights, IL 62208
(618) 628-7395
Gr: PK-8 | 274 students Tuition listed
St. Clare Catholic School
(Catholic)
214 W 3rd St
O Fallon, IL 62269
(618) 632-6327
O Fallon, IL 62269
(618) 632-6327
Gr: PK-8 | 467 students Tuition & acceptance rate listed
St. John The Baptist School
(Catholic)
10 S Lincoln St
Smithton, IL 62285
(618) 233-0581
Smithton, IL 62285
(618) 233-0581
Gr: K-8 | 72 students Avg. class size: 10 students Sports: 6 | Extracurrculars: 10 Tuition listed
Zion Lutheran School![Zion Lutheran School Photo - Growing the minds of all learners, from little to middles and impacting lives for future generations.]( "Zion Lutheran School Photo - Growing the minds of all learners, from little to middles and impacting lives for future generations.")
(Lutheran Church Missouri Synod)
1810 Mcclintock Ave
Belleville, IL 62221
(618) 234-0275
Belleville, IL 62221
(618) 234-0275
Gr: PK-8 | 289 students Avg. class size: 18 students Sports: 6 | Extracurrculars: 8 Tuition listed
Bekidz (true Vine Bekidz)
Daycare / Preschool (Christian)
5700 Old Collinsville Rd Fairview Heights, IL, US 62208
Belleville, IL 62221
(405) 696-9500
Belleville, IL 62221
(405) 696-9500
Gr: PK-K | 24 students
5100 N Illinois St
Fairview Heights, IL 62208
(618) 825-0609
Fairview Heights, IL 62208
(618) 825-0609
Gr: PK-12 | 35 students Avg. class size: 10 students Tuition & acceptance rate listed
Blessed Sacrament School
(Catholic)
8809 W Main St
Belleville, IL 62223
(618) 397-1111
Belleville, IL 62223
(618) 397-1111
Gr: PK-8 | 168 students Tuition listed
Calvary Baptist Academy
(Baptist)
423 Lucinda Ave
Belleville, IL 62221
(618) 234-3620
Belleville, IL 62221
(618) 234-3620
Gr: 1-3 | 7 students
Discovery School
Daycare / Preschool
810 Obernuefemann Road
O Fallon, IL 62269
(618) 632-3670
O Fallon, IL 62269
(618) 632-3670
Gr: NS-PK | 120 students
Elite Scholars Steam Academy
Special Program Emphasis
323 Benedictine Ct
O Fallon, IL 62269
(618) 726-2022
O Fallon, IL 62269
(618) 726-2022
Gr: PK-8 | 59 students
The Goddard School![The Goddard School Photo]( "The Goddard School Photo")
Daycare / Preschool
1160 Fortune Boulevard
O Fallon, IL 62269
(618) 624-2750
O Fallon, IL 62269
(618) 624-2750
Gr: NS-K Acceptance rate listed
219 West Main Street
Belleville, IL 62220
(618) 233-7542
Belleville, IL 62220
(618) 233-7542
Gr: PK-12 | 107 students Avg. class size: 15 students Sports: 4 | Extracurrculars: 7 Tuition & acceptance rate listed
Holy Childhood Of Jesus School
(Catholic)
215 N John St
Mascoutah, IL 62258
(618) 566-2922
Mascoutah, IL 62258
(618) 566-2922
Gr: PK-8 | 172 students
Illinois Center For Autism
Special Education School
548 S Ruby Ln
Fairview Heights, IL 62208
(618) 973-2485
Fairview Heights, IL 62208
(618) 973-2485
Gr: Inquire with school | 112 students
Illinois Center For Autism
Special Education School
1306 Wabash Ave
Belleville, IL 62220
(618) 398-7500
Belleville, IL 62220
(618) 398-7500
Gr: PK-12 | 99 students Avg. class size: 12 students
Jtc Academy
Special Education School
4850 Market St
East Saint Louis, IL 62207
(618) 398-2524
East Saint Louis, IL 62207
(618) 398-2524
Gr: 8-12 | 24 students
Jtc Boys Academy
Special Education School
353 N 88th St Hwy 157
East Saint Louis, IL 62203
(618) 398-2524
East Saint Louis, IL 62203
(618) 398-2524
Gr: 8-12 | 12 students
Legacy Christian Academy
(Christian)
111 S 2nd St
Caseyville, IL 62232
(618) 345-9571
Caseyville, IL 62232
(618) 345-9571
Gr: PK-8 | 34 students Avg. class size: 8 students Tuition & acceptance rate listed
Metro-east Adventist Christian School
(Seventh Day Adventist)
7864 N Illinois St
Caseyville, IL 62232
(618) 365-6440
Caseyville, IL 62232
(618) 365-6440
Gr: 1-6 | 8 students
Montessori School-St Clair
Montessori School
2360 Country Rd
Belleville, IL 62221
(618) 235-4289
Belleville, IL 62221
(618) 235-4289
Gr: PK-K | 25 students Avg. class size: 15 students Tuition listed
Notre Dame Academy Of Belleville
(Catholic)
200 S. Second St.
Belleville, IL 62220
(618) 233-6414
Belleville, IL 62220
(618) 233-6414
Gr: PK-8 | 59 students Avg. class size: 10 students
Our Lady Queen Of Peace School
(Catholic)
5915 N Belt W
Belleville, IL 62223
(618) 234-1206
Belleville, IL 62223
(618) 234-1206
Gr: PK-8 | 206 students
St. Henry Elementary School
(Catholic)
5303 West Main Street
Belleville, IL 62226
(618) 234-6061
Belleville, IL 62226
(618) 234-6061
Gr: K-8 | 101 students
St. James Catholic School![St. James Catholic School Photo - Members of the Pet Patrol clean cages and write care pet plans.]( "St. James Catholic School Photo - Members of the Pet Patrol clean cages and write care pet plans.")
(Catholic)
412 W Washington St
Millstadt, IL 62260
(618) 476-3510
Millstadt, IL 62260
(618) 476-3510
Gr: PK-8 | 141 students Sports: 6 | Extracurrculars: 19 Tuition & acceptance rate listed
St. Joseph Catholic School
(Catholic)
2 N Alton St
Freeburg, IL 62243
(618) 539-3930
Freeburg, IL 62243
(618) 539-3930
Gr: PK-8 | 123 students
St. Teresa Catholic School
(Catholic)
1108 Lebanon Avenue
Belleville, IL 62221
(618) 235-4066
Belleville, IL 62221
(618) 235-4066
Gr: PK-8 | 214 students Avg. class size: 21 students Sports: 7 | Extracurrculars: 12 Tuition & acceptance rate listed
Sister Thea Bowman
(Catholic)
8213 Church Ln
East Saint Louis, IL 62203
(618) 397-0316
East Saint Louis, IL 62203
(618) 397-0316
Gr: K-8 | 137 students Tuition listed
Unity Lutheran Christian Elementary School
(Lutheran Church Missouri Synod)
1600 N 40th St
East Saint Louis, IL 62204
(618) 874-6605
East Saint Louis, IL 62204
(618) 874-6605
Gr: PK-8 | 143 students
Vincent Gray Academy
Alternative School (Christian)
1048 State St
East Saint Louis, IL 62201
(618) 875-7880
East Saint Louis, IL 62201
(618) 875-7880
Gr: Inquire with school | 35 students
St. Clair County Private Schools (Closed)
School
Location
Quick Facts
Apostolic Learning Academy (Closed 2012)
(Pentecostal)
400 Louisa Avenue
Dupo, IL 62239
(618) 286-4279
Dupo, IL 62239
(618) 286-4279
Gr: K-12
Faith Baptist School (Closed 2025)
(Baptist)
413 E Main St
Belleville, IL 62220
(618) 234-3391
Belleville, IL 62220
(618) 234-3391
Gr: PK-12 | 48 students
116 E 1st St
East Saint Louis, IL 62206
(618) 337-2880
East Saint Louis, IL 62206
(618) 337-2880
Gr: K-9 | 104 students
Holy Rosary School (Closed 2015)
(Catholic)
2727 N 43rd Street
East Saint Louis, IL 62201
(618) 271-8600
East Saint Louis, IL 62201
(618) 271-8600
Gr: K-8 | 133 students
207 S Market St
New Athens, IL 62264
(618) 475-2170
New Athens, IL 62264
(618) 475-2170
Gr: PK-8 | 45 students
St. Mary Elementary School (Closed 2006)
(Catholic)
1722 West Main Street
Belleville, IL 62226
(618) 234-2476
Belleville, IL 62226
(618) 234-2476
Gr: PK-8 | 108 students
Frequently Asked Questions
What are the top ranked private schools in St. Clair County, IL?
The top ranked private schools in St. Clair County, IL include Althoff Catholic High School, St. Clare Catholic School, and Zion Lutheran School.
How many private schools are located in St. Clair County?
32 private schools are located in St. Clair County.
How much do private schools cost in St. Clair County?
The average tuition cost is $5,555, which is lower than the Illinois private school average tuition cost of $12,761.
How diverse are private schools in St. Clair County?
St. Clair County private schools are approximately 29% minority students, which is lower than the Illinois private school average of 34%.
What percentage of students in St. Clair County go to private school?
9% of all K-12 students in St. Clair County are educated in private schools (compared to the IL state average of 12%).
What percentage of private schools are religiously affiliated in St. Clair County?
Which private schools in St. Clair County are often viewed compared to one another?
Popular comparisons of private schools in St. Clair County include: Unity Lutheran Christian Elementary School vs. Sister Thea Bowman, Sister Thea Bowman vs. Unity Lutheran Christian Elementary School, Discovery School vs. The Goddard School
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