The Southern Maryland Athletic Conference (SMAC) is a high school athletic league in Maryland, comprising the public secondary and high schools throughout Southern Maryland. The SMAC's membership consists of the following schools located in Calvert, Charles, and St. Mary's Counties:Calvert High School Chopticon High School Great Mills High School Henry E. Lackey High School Huntingtown High School La Plata High School Leonardtown High School Maurice J. McDonough High School Northern High School North Point High School Patuxent High School Thomas Stone High School Westlake High School St. Charles High School