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Top 20 Best Pennsylvania Private High Schools Belonging to Association of Delaware Valley Independent Schools (ADVIS) (2025)

For the 2025 school year, there are 24 private high schools belonging to Association of Delaware Valley Independent Schools (ADVIS) serving 8,239 students in Pennsylvania. You can also find more schools membership associations in Pennsylvania.

The private high schools belonging to Association of Delaware Valley Independent Schools (ADVIS) in Pennsylvania include The Agnes Irwin School, Girard College, and Gwynedd Mercy Academy High School.

The average tuition cost is $36,779, which is higher than the Pennsylvania private high school average tuition cost of $18,490.

33% of private high schools belonging to Association of Delaware Valley Independent Schools (ADVIS) in Pennsylvania are religiously affiliated (most commonly Catholic and Friends).

Cristo Rey Philadelphia High School Photo

Delaware Valley Friends School Photo - Delaware Valley Friends School is a national leader in the field of educating students (grades 1-12) with dyslexia, dysgraphia, executive function disorders, ADHD, and other learning differences located in the Philadelphia area.

AIM Academy Photo - MEETING LEARNING CHALLENGES WITH SCIENCE & LOVE: AT AIM, we recognize that children who learn differently need to be taught differently - and that's exactly what we do. Our passionately committed, highly-trained faculty employ techniques proven effective, and the results are remarkable. Each day we witness young people who doubted themselves in every way discover the gift of fearless learning.

Kimberton Waldorf School Photo - The 5th grade Pentathlon brings together Waldorf schools from a three-hour radius for a day of friendly athletic competition and collaboration -- the culmination of their Greek studies.

The Crefeld School Photo - Two Upper School Students on a beautiful day in Crefeld's field

Harrisburg Academy Photo - Upper School Students take a moment to discuss the period's lecture.

Valley Forge Military Academy Photo - Within the Corps of Cadets, various programs enrich cadet life by fostering character, social, and life skills. The Cadet Life Program offers opportunities for personal development through religious, social, and physical activities, along with clubs and honor societies. Guided by the Honor Code, "A cadet will not lie, cheat, steal, nor tolerate those who do," integrity is central to cadet

Sacred Heart Academy Bryn Mawr Photo - Sacred Heart Academy Bryn Mawr is a Catholic, independent college preparatory school for girls K-12, founded in 1865 by the Religious of the Sacred Heart of Jesus. Known as SHA, the private girls' school is located in PA outside of Philadelphia with elementary, middle and upper school divisions located on one campus.

Devon Preparatory School Photo - Each year members of Devon Prep's Christian Action Program (CAP) collects and delivers thousands of food items to an inner city community center for Thanksgiving.

Girard College Photo - Field trips take advantage of the numerous and varied museums and historic sites in Philadelphia. These first graders are sketching at PAFA (Pennsylvania Academy of Fine Arts).

Villa Maria Academy High School Photo - Villa Maria is located on the western Main Line, on 45 acres in Malvern, PA. Students move between three classroom buildings and a newly-constructed student union, which houses the dining hall, administrative offices, counseling, study space, and the chapel.

Vanguard School Photo - The Vanguard School, Malvern, PA

The Baldwin School Photo - Girls sometimes learn that the effect they predicted on paper isn't always what happens in the test tube, and that rethinking a reaction-- or learning about the world and coming up with a smart, new prediction-- is the real solution.

The Haverford School Photo - Haverford's visual arts program includes 10 dedicated art studios and a design and engineering studio. Students experiment with 3D printing and other new media.

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