Loyola Academy affiliated with Saint Louise de Marillac High School, an all-girls high school from Northfield, Illinois and became co-educational in 1994. The affiliation was done for financial reasons. The President of Marillac was approached by Loyola to consider a co-ed option on the North Shore as requested by the Archdiocese. About that same time, Loyola added on to their existing building. In 2003, Loyola Academy opened a new campus in Glenview, Illinois. The property, near the decommissioned Glenview Naval Air Station (NAS Glenview), was purchased by Loyola in 2001 and now houses several athletic fields for lacrosse, baseball, softball, and soccer, a cross country path, and a wetland preserve area that has been used as a natural laboratory for science classes.