Islip High School is the public high school in Islip, in Suffolk County, New York on the South Shore of Long Island.

The curriculum at the Islip high School includes all academic areas, as well as art, music, and technology.

Beginning at the Middle School level, honors classes are offered in English, social studies, mathematics, science, Italian, and Spanish.

Advanced Placement courses are offered in, including but not limited to, Art History, English Language and Composition, English Literature and Composition, US History, European History, US Government and Politics, Human Geography, Calculus AB, Statistics, Biology, Chemistry, Physics 1 & 2, Environmental Science, Seminar, Research, and the Italian and Spanish Languages.

[5] The High School also offers dual credit options through affiliations with Suffolk County Community College (Math & Music), Farmingdale State College (Business & Technology), Hofstra (Engineering), and St. John's University (Italian, Business, & Science).