Private School Review - Established 2003

Alton Private High Schools

For the 2026-27 school year, there are 4 private high schools serving 604 students in Alton, IL.
The average acceptance rate is 99%, which is higher than the Illinois private high school average acceptance rate of 86%.
75% of private high schools in Alton, IL are religiously affiliated (most commonly Catholic and Baptist).

Quick Facts (26-27)

Quick Facts (26-27)

Top Ranked Alton Private High Schools (2026-27)

Map of Center For Children To Heal And Achieve (ccha)
Center For Children To Heal And Achieve (ccha)
Gr: 2-12 | 46 students
Special Education School
1400 State St
Alton, IL 62002
(618) 465-3594
View Profile
Map of Marquette Catholic High School
Marquette Catholic High School
Gr: 9-12 | 390 students
Avg. class size: 20 students
Sports: 14 | Extracurriculars: 13
Catholic
219 E 4th St
Alton, IL 62002
(618) 463-0580
(1)
View Profile
Map of St. Mary's School
St. Mary's School
Gr: 7-9 | 82 students
Catholic
1015 Milton Rd
Alton, IL 62002
(618) 465-9719
View Profile
Mississippi Valley Christian School Photo
Mississippi Valley Christian School
Gr: PK-12 | 86 students
Avg. class size: 10 students
Sports: 3 | Extracurriculars: 2
Baptist
2009 Seminary Street
Alton, IL 62002
(618) 462-1071
View Profile
[+] Show Closed Private Schools in Alton, Illinois

Alton, Illinois Private Schools (Closed)

Map of Ss Peter & Paul Elementary School
Ss Peter & Paul Elementary School
Gr: PK-8 | 79 students
Catholic
801 State St
Alton, IL 62002
(618) 465-8711
View Profile

Alton, IL Private School Trends (10-Year)

4
Private Schools
604
Students
-9.3% (-62 students) 10-yr
$6,509
Avg. Tuition
+103.2% (+$3,305) 10-yr
15
Avg. Class Size
+25.0% (+3 students) 10-yr
14%
Students of Color
-12.5% (-2.0 pp) 10-yr
11:1
Student-Teacher Ratio
Download town snapshot: CSV | XML | JSON Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission.
Enrollment & Diversity
Category
This Town (Alton)
This State (IL)
# Schools
4 Schools
389 Schools
# Students
604 Students
90,029 Students

Trends in the Average Number of Students Per Private High School

YearAlton, IL AvgIllinois (IL)National
2025151238253
2024148230245
2023156248247
2022155255257
2021155247249
2020154233235
2019176252242
2018179243238
2017165239246
2016167238241
2015167230220
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% Students of Color
14%
35%

Percentage of Students of Color Trends (2015-2025)

YearAlton, IL AvgIllinois (IL)National
202514%35%32%
202414%35%31%
202315%34%31%
202223%34%30%
202123%34%30%
202014%34%29%
201917%32%29%
201816%33%28%
201714%34%30%
201616%35%30%
201516%34%30%
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0.30
0.62

Diversity Score Trends

YearAlton, IL AvgIllinois (IL)National
20250.300.620.61
20240.300.620.60
20230.290.620.60
20220.270.600.58
20210.270.600.57
20200.270.610.57
20190.280.600.56
20180.290.580.55
20170.280.560.54
20160.280.560.54
20150.280.570.53
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Show more data/charts: racial breakdown
# American Indian Students
1 Student
298 Students
% American Indian Students
n/a
n/a
# Asian Students
7 Students
5,624 Students
% Asian Students
1%
6%

Asian Student Percentage Trends

YearAlton, IL AvgIllinois (IL)National
20252%7%5%
20242%7%6%
20231%8%6%
20222%8%5%
20212%7%5%
20202%7%5%
20191%6%5%
20181%7%5%
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# Hispanic Students
7 Students
10,093 Students
% Hispanic Students
1%
11%

Hispanic Student Percentage Trends

YearAlton, IL AvgIllinois (IL)National
20251%11%9%
20241%11%9%
20231%11%8%
20191%9%8%
20181%10%8%
20172%10%7%
20162%9%8%
20152%9%8%
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# Black Students
63 Students
9,711 Students
% Black Students
10%
11%

Black Student Percentage Trends

YearAlton, IL AvgIllinois (IL)National
202510%11%8%
202410%11%8%
202312%10%8%
202211%10%8%
202111%11%8%
202011%11%8%
201914%11%8%
201814%11%8%
201713%11%8%
201613%12%8%
201513%12%9%
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# White Students
531 Students
52,463 Students
% White Students
83%
58%

White Student Percentage Trends

YearAlton, IL AvgIllinois (IL)National
202583%58%59%
202483%58%60%
202384%58%60%
202285%60%62%
202185%60%63%
202085%60%64%
201984%61%64%
201883%62%65%
201784%64%66%
201684%64%66%
201584%63%66%
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# Hawaiian Students
n/a
105 Students
% Hawaiian Students
n/a
n/a
# Two or more races Students
n/a
n/a
% of Two or more races Students
n/a
n/a
# Others Students
28 Students
12,270 Students
% of Others Students
5%
14%

Other Races Student Percentage Trends

YearAlton, IL AvgIllinois (IL)National
20254%13%17%
20244%13%15%
20232%13%16%
20222%12%16%
20212%12%15%
20202%12%14%
20181%10%13%
20171%11%14%
20161%11%13%
20151%11%12%
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All Ethnic Groups
Academics
# Teachers
56 Teachers
7,581 Teachers
Average Student-Teacher Ratio
11:1
11:1

Student-Teacher Ratio Trends (2015-2025)

YearAlton, IL AvgIllinois (IL)National
202511:111:110:1
202411:111:110:1
202311:111:110:1
202211:111:110:1
202111:111:110:1
202011:111:110:1
201911:111:110:1
201811:112:110:1
201711:112:110:1
201611:112:110:1
201511:112:110:1
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% Average Faculty w/Advanced Degree
32%
57%

Percentage of Faculty With Advanced Degrees Trends (2015-2025)

YearAlton, IL AvgIllinois (IL)National
202532%56%57%
202432%55%57%
202332%54%57%
202232%55%56%
202132%55%56%
20203%54%56%
20193%54%55%
20183%53%55%
20173%54%55%
20163%54%54%
20153%55%54%
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Average Class Size
15 students
15 students

Class Size Trends (2015-2025)

YearAlton, IL AvgIllinois (IL)National
2025151514
2024151514
2023151514
2022151514
2021151514
2020141514
2019141514
2018101614
2017101614
2016121614
2015121614
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Average Number of AP Courses
8 courses
12 courses

Trends in Average Number of AP Courses Offered

YearAlton, IL AvgIllinois (IL)National
202591113
20247912
20235912
20225912
20215912
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Average ACT score
22
(Out of 36)
25

ACT Score Trends (2015-2025)

YearAlton, IL AvgIllinois (IL)National
2025222526
2024222526
2023222526
2022222526
2021222526
2020222526
2019222525
2018222525
2017222525
2016222425
2015222425
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Tuition & Aid
Average Yearly Tuition Cost
$6,509
$14,315

Tuition Cost Trends (2015-2025)

YearAlton, IL AvgIllinois (IL)National
2025$12,523$15,731$17,997
2024$6,112$14,197$17,011
2023$5,744$13,364$16,191
2022$5,644$12,798$15,821
2021$5,644$12,234$15,331
2020$5,532$12,456$15,046
2019$5,310$11,771$14,791
2018$3,204$11,798$14,527
2017$3,204$11,717$14,161
2016$3,204$10,185$13,713
2015$3,204$9,775$13,065
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Average Summer Program Cost
$150
$1,192

Summer Program Cost Trends (2022-2025)

YearAlton, IL AvgIllinois (IL)National
2025$150$1,192$1,513
2024$150$1,168$1,498
2023$125$1,323$1,623
2022$125$1,557$1,473
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Average % on Financial Aid
56%
40%

Percent on Financial Aid Trends (2019-2025)

YearAlton, IL AvgIllinois (IL)National
202554%39%38%
202454%38%37%
202354%37%36%
202254%37%36%
202154%38%36%
202054%38%35%
201954%37%34%
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Admissions & Athletics
Average Acceptance Rate
99%
86%

Acceptance Rate Trends (2015-2025)

YearAlton, IL AvgIllinois (IL)National
202599%82%79%
202499%85%81%
202399%86%81%
202299%87%81%
202199%87%81%
202099%87%81%
201999%86%81%
201899%86%80%
201799%86%81%
201699%89%80%
201599%88%81%
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Average Number of Extracurriculars
8 extracurriculars
14 extracurriculars
Average Number of Sports
9 sports
9 sports

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?

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