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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.

The top-ranked private high schools belonging to Association of Delaware Valley Independent Schools (ADVIS) in Delaware include The Tatnall School, Tower Hill School, and Salesianum School.

The average acceptance rate is 73%, which is lower than the Delaware private high school average acceptance rate of 87%.

40% of private high schools belonging to Association of Delaware Valley Independent Schools (ADVIS) in Delaware are religiously affiliated (most commonly Catholic).