Private Schools in Central Islip, New York

The Green Vale School is an acclaimed independent day school serving families from Central Islip and across Long Island. The school offers a comprehensive educational program from early childhood through 8th grade with a strong emphasis on academic excellence and character development. The curriculum includes advanced STEAM programs, world languages beginning in pre-kindergarten, and extensive arts and athletic opportunities. The 20-acre campus features state-of-the-art facilities including science labs, technology centers, art studios, and athletic fields. The school is known for its small class sizes and personalized approach to learning.

St. John the Baptist Diocesan High School is a highly-regarded Catholic college preparatory school serving Central Islip and surrounding communities. The school offers a rigorous academic program with 22 Advanced Placement courses, extensive STEM offerings, and comprehensive arts and athletic programs. With a student-teacher ratio of 14:1, the school provides personalized attention and strong college counseling. The campus features modern science labs, technology-integrated classrooms, and extensive athletic facilities. The school emphasizes character development and community service alongside academic excellence.

The Knox School is a prestigious independent college preparatory school serving Central Islip and the broader Long Island region. The school offers both day and boarding programs for grades 6-12 with a strong focus on academic rigor and personal growth. The curriculum includes comprehensive Advanced Placement offerings, an arts conservatory program, and competitive athletics. The historic campus features modern academic facilities, science and technology labs, performing arts spaces, and extensive athletic amenities. The school emphasizes global citizenship and leadership development through its diverse student body and international programs.