In 1973, Norwood Academy for boys and Fontbonne Academy for girls merged under the leadership of Sister James Anthony (Mary) Scanlon forming Norwood-Fontbonne Academy, one school on two campuses. Since then, Norwood-Fontbonne Academy has enjoyed a continuous expansion of programs and facilities. Program developments have included the addition of Junior Level Montessori for six- to nine-year-olds, and the creation of the Pre-primary, Kindergarten and Primary program along with before- and after-care services, science labs, and Service Learning. These are complemented by multiple co-curricular offerings and intramural and interscholastic athletics.
That same year, Sr. James Anthony Hall, a new building on the Norwood Campus, provided new upper-grade classrooms, a large gymnasium with locker rooms, small kitchen area, and stage. New construction in 2006 included the Fontbonne Commons, a multipurpose building on the Fontbonne Campus, and the addition of the seventh and eighth grade classroom wing in Sister James Anthony Hall. The gym in the Sister James Anthony Hall was renovated during the 2012-2013 school year.