Marymount's commitment to fostering diversity was exemplified as students hailing from 33 different zip codes were welcomed into its community. The institution also embraced a diverse array of co-curricular activities, instilling a profound dedication to intellectual rigor, creative expression, strong spiritual values, and an unwavering commitment to social justice.


The campus experienced a setback in 1994 when the Northridge Earthquake caused significant damage, necessitating a one-week closure of the campus. The damage to campus led to the postponement of Homeport, the school’s fundraising event, and the deferral of final exams. Furthermore, the three-ton chimney atop the administration building had to be removed for safety reasons, finding new life as “The Cupcake,” a planter outside of the dining room
Also during this era, the Terry Leavey Lemons Pavilion was remodeled to accommodate a new state-of-the-art Fitness and Athletics Center.


A pivotal change in the school’s governance structure occurred with the replacement of the Marymount Board of Regents by the Board of Trustees, comprising members that included RSHM Sisters. In 1991, Sister Colette McManus stepped down as Head of School, and Ms. Ann Gillick assumed the role in the interim. 1996, Dr. Mary Ellen Gozdecki became Head of School. Under Dr. Gozdecki's stewardship, Marymount's curriculum underwent a transformation, encompassing an expanded offering of Advanced Placement and Honors courses.