 When classes grew too large in 1902, a new co-educational high school building was constructed on Ninth Street between Lemon and Lime Streets, and the original 14th Street building became the Grant School, serving grades 3–8.In 1910, Riverside High School's enrollment was approximately 500 students, and new facilities were required.In 1911, the genders were separated, creating a Girls High School at the Ninth Street building, and the Polytechnic High School for boys at a newly constructed campus on Terracina Avenue.