Trinity School (also known as Trinity) is a highly selective independent, preparatory, co-educational day school for grades K–12 located in the Upper West Side neighborhood in the Manhattan borough of New York City, New York, United States, and a member of both the New York Interschool and the Ivy Preparatory School League. It is regarded as one of the most elite private high schools in the United States, sending over 40% of graduating students to the Ivy League and other top schools.