IHA has produced the musicals "The Secret Garden", "Beauty and the Beast", "Guys and Dolls", "Cats", "A Chorus Line", "Legally Blonde", "Seussical", "The Boyfriend", "42nd Street, The Little Mermaid, and Into The Woods". The student performers in these musicals are of the highest caliber, some with NJ high school theatre awards, such as Paper Mill Playhouse Rising Star Awards, Montclair State University Theatre Night Awards, and Metropolitan High School Theatre Awards (formerly Helen Hayes). These musicals are performed in conjunction with students from St. Joseph Regional High School, Don Bosco Preparatory High School, and Bergen Catholic High School.