St. Joseph by-the-Sea High School (also known as SJS or Sea) is a co-educational Catholic school in the Huguenot neighborhood of Staten Island, New York, United States. Though technically an independent school with its own board of trustees, it functions for all intents and purposes as a school of the Roman Catholic Archdiocese of New York. The school serves approximately 1,200 students in 9th, 10th, 11th and 12th grades.