Thank you for visiting the Aberdeen Catholic School System website! Whether you are prospective Roncalli family, current family, donor, staff member or curious web surfer, we hope you find this site helpful and informative.  The ACSS, or commonly known as Roncalli, has a rich history in the Aberdeen, South Dakota  area. We are a co-sponsored ministry of the Catholic parishes of Sacred Heart and St. Mary’s.

With current enrollment at 539, the Roncalli schools provide a high quality education in a nurturing, faith-filled environment.  Service to God and neighbor, regardless of one’s faith tradition, is the hallmark of what we do.

To schedule a visit or find out more about how you can share your time, talent and treasure, please contact us at (605) 226-2100 or email Pat.Gallagher@aberdeenroncalli.org.

God Bless!

JoEllen Lindner

ACSS President