Capital Campaigns are vital programs in the life of a school and are authorized by the Board of Governors. This process is usually started after extensive strategic planning has taken place to determine the capital needs and priorities of the school. Members of this school community have donated generously to many campaigns since the opening of St. Agnes School in 1924 and St. Stephen’s School in 1944 and the opening of St. Stephen's & St. Agnes School in 1991. Truly, generations of people have been involved to bring the school to the place it is today.

Just recently, St. Stephen's & St. Agnes School completed the New Century Fund Campaign and raised over $11 million to renovate all three campuses and build the new Chapel and Performing Arts Center.