Mississippi Valley Christian School Photo

Best Alton Private High Schools (2025-26)

For the 2025-26 school year, there are 4 private high schools serving 604 students in Alton, IL.
The top ranked private high schools in Alton, IL include Center For Children To Heal And Achieve (ccha), Marquette Catholic High School, and St. Mary's School.
The average acceptance rate is 99%, which is higher than the Illinois private high school average acceptance rate of 82%.
75% of private high schools in Alton, IL are religiously affiliated (most commonly Catholic and Baptist).

Top Ranked Alton Private High Schools (2025-26)

School
Location
Quick Facts
Center For Children To Heal And Achieve (ccha)
Special Education School
1400 State St
Alton, IL 62002
(618) 465-3594
Gr: 2-12 | 46 students
Marquette Catholic High School
(Catholic)
(1)
219 E 4th St
Alton, IL 62002
(618) 463-0580
Gr: 9-12 | 390 students Avg. class size: 20 students Sports: 13 | Extracurrculars: 13 Tuition & acceptance rate listed
St. Mary's School
(Catholic)
1015 Milton Rd
Alton, IL 62002
(618) 465-9719
Gr: 7-9 | 82 students Tuition listed
2009 Seminary Street
Alton, IL 62002
(618) 462-1071
Gr: PK-12 | 86 students Avg. class size: 10 students Sports: 3 | Extracurrculars: 2 Tuition & acceptance rate listed
[+] Show Closed Private Schools in Alton, Illinois

Alton, Illinois Private Schools (Closed)

School
Location
Quick Facts
801 State St
Alton, IL 62002
(618) 465-8711
Gr: PK-8 | 79 students

Frequently Asked Questions

What are the top ranked private high schools in Alton, IL?
The top ranked private high schools in Alton, IL include Center For Children To Heal And Achieve (ccha), Marquette Catholic High School, and St. Mary's School.
How many private high schools are located in Alton?
4 private high schools are located in Alton.
What percentage of private high schools are religiously affiliated in Alton?
75% of private high schools in Alton are religiously affiliated (most commonly Catholic and Baptist).
Which private high schools in Alton are often viewed compared to one another?
Popular comparisons of private high schools in Alton include: Marquette Catholic High School vs. Mississippi Valley Christian School

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