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

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

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)

Add to Compare

View Profile

American School

Gr: 6-12 | 6,319 students

Alternative School

2200 E 170th St

Lansing, IL 60438

(708) 418-2800

Add to Compare

View Profile

Hinsdale Adventist Academy

Gr: PK-12 | 176 students

Avg. class size: 12 students

Sports: 3 | Extracurriculars: 10

Seventh Day Adventist

631 E Hickory St

Hinsdale, IL 60521

(630) 323-9211

(1)

Add to Compare

View Profile

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)

Add to Compare

View Profile

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)

Add to Compare

View Profile

Fox Valley Lutheran Academy

Gr: 10-12 | 14 students

Avg. class size: 13 students

Lutheran Church Missouri Synod

1111 Van St

Elgin, IL 60123

(847) 741-7795

Add to Compare

View Profile

Frequently Asked Questions

What are the top ranked private high schools belonging to National Council for Private School Accreditation (NCPSA) in Illinois?

The private high schools belonging to National Council for Private School Accreditation (NCPSA) in Illinois include American School, Schaumburg Christian School, and Hinsdale Adventist Academy.

How many private high schools belonging to National Council for Private School Accreditation (NCPSA) are located in Illinois?

6 private high schools belonging to National Council for Private School Accreditation (NCPSA) are located in Illinois.

How diverse are private high schools belonging to National Council for Private School Accreditation (NCPSA) in Illinois?

Illinois private high schools belonging to National Council for Private School Accreditation (NCPSA) are approximately 43% minority students, which is higher than the Illinois private school average of 35%.

What percentage of private high schools belonging to National Council for Private School Accreditation (NCPSA) are religiously affiliated in Illinois?

67% of private high schools belonging to National Council for Private School Accreditation (NCPSA) in Illinois are religiously affiliated (most commonly Lutheran Church Missouri Synod and Seventh Day Adventist).

Illinois Private High Schools Belonging to National Council for Private School Accreditation (NCPSA) Trends

Private Schools

7,756

Students

$7,775

Avg. Tuition

43%

Students of Color

16:1

Student-Teacher Ratio

Recent Articles

November 03, 2026

Can Private Schools Raise Fees After You Sign?

Can private schools increase mandatory fees after enrollment contracts are signed? Learn how contract terms, fee disclosures, state laws, and parent rights affect unexpected charges and available options.

November 03, 2026

Financial Aid When a Sibling Graduates Private School

Learn how private school financial aid may change when an older sibling graduates, including revised family contributions, sibling discounts, college expenses, renewal decisions, and practical steps to protect affordability.

November 03, 2026

Private School Expansion: Preserving School Culture

Discover how growing private schools can expand enrollment while preserving small classes, personal attention, strong relationships, and school culture, plus essential questions parents should ask before choosing a school.