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Illinois Lutheran High School Top 16 ยท Highest Avg. SAT Score (IL)
American School
Alexander Graham Bell Montessori School

Best Illinois Private High Schools Belonging to National Council for Private School Accreditation (NCPSA) (2026-27)

For the 2026-27 school year, there are 4 private high schools belonging to National Council for Private School Accreditation (NCPSA) serving 7,566 students in Illinois. You can also find more schools membership associations in Illinois.
The top ranked private high schools belonging to National Council for Private School Accreditation (NCPSA) in Illinois include American School, Schaumburg Christian School, and Illinois Lutheran High School.
The average acceptance rate is 98%, which is higher than the Illinois private high school average acceptance rate of 81%.
50% of private high schools belonging to National Council for Private School Accreditation (NCPSA) in Illinois are religiously affiliated (most commonly Wisconsin Evangelical Lutheran Synod and Baptist).

Quick Facts (2026-27)

  • # Private Schools: 4

Quick Facts (2026-27)

  • # Private Schools: 4

Top Ranked Private High Schools Belonging to National Council for Private School Accreditation (NCPSA) in Illinois (2026-27)

Illinois Lutheran High School Photo
Illinois Lutheran High School
Gr: PK-12 | 258 students
Avg. class size: 20 students
Sports: 8 | Extracurriculars: 12
Wisconsin Evangelical Lutheran Synod
1610 Main St
Crete, IL 60417
(708) 672-3262
(5)
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American School Photo
American School
Gr: 6-12 | 6,319 students
Alternative School
2200 E 170th St
Lansing, IL 60438
(708) 418-2800
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Map of Schaumburg Christian School
Schaumburg Christian School
Gr: PK-12 | 889 students
Avg. class size: 17 students
Sports: 7 | Extracurriculars: 12
Baptist
200 N Roselle Road
Schaumburg, IL 60194
(847) 885-3230
(52)
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Alexander Graham Bell Montessori School Photo
Alexander Graham Bell Montessori School
Gr: NS-12 | 100 students
Avg. class size: 20 students
Sports: 7 | Extracurriculars: 7
Montessori School
9300 Capitol Drive
Wheeling, IL 60090
(847) 850-5490
(3)
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Frequently Asked Questions

What are the top ranked private high schools belonging to National Council for Private School Accreditation (NCPSA) in Illinois?
The top ranked private high schools belonging to National Council for Private School Accreditation (NCPSA) in Illinois include American School, Schaumburg Christian School, and Illinois Lutheran High School.
How many private high schools belonging to National Council for Private School Accreditation (NCPSA) are located in Illinois?
4 private high schools belonging to National Council for Private School Accreditation (NCPSA) are located in Illinois.
What percentage of private high schools belonging to National Council for Private School Accreditation (NCPSA) are religiously affiliated in Illinois?
50% of private high schools belonging to National Council for Private School Accreditation (NCPSA) in Illinois are religiously affiliated (most commonly Wisconsin Evangelical Lutheran Synod and Baptist).
4
Private Schools
7,566
Students
$7,533
Avg. Tuition
42%
Students of Color
16:1
Student-Teacher Ratio

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