Admin

Diocesan High School

Holy Trinity Diocesan High School
98 Cherry Lane
Hicksville, NY 11801
Ph: 516-433-2900
Fax: 516-433-2827
1225 Ostrander Ave
Riverhead, NY 11901
Ph: (631) 727-5900
Fax: (631) 369-7328
1170 Montauk Hwy
West Islip, NY 11795
Ph: (631) 587-8000
Fax: (631) 587-8996