Hauppauge High School educates students in grades 9-12. Principal Christine O'Connor oversees the students and their work, with the school's annual graduating class at approximately 400 students. It offers a wide array of academic courses, extracurricular clubs, athletic programs and volunteer opportunities to its students.
In 2010, 94 percent of its students graduated with New York State Regents diplomas or Regents Diplomas with Advanced Designation. Approximately 96 percent of its 2010 graduates moved on to enroll in higher education.