Best Delaware Private High Schools Belonging to Association of Delaware Valley Independent Schools (ADVIS) (2026)
For the 2026 school year, there are 5 private high schools belonging to Association of Delaware Valley Independent Schools (ADVIS) serving 2,863 students in Delaware. You can also find more schools membership associations in Delaware.
40% of private high schools belonging to Association of Delaware Valley Independent Schools (ADVIS) in Delaware are religiously affiliated (most commonly Catholic).
A 2026 parent guide to choosing the right private school, with updated admissions timelines, tuition trends, affordability strategies, and expert insights.