In the spring of 2006, the SCBDA voted to no longer use the South Carolina High School League school classifications to classify high school bands. High school bands are classified and re-aligned each year by the SCBDA using the South Carolina State Department of Education 45-day ADM figures. The following formula is used for classifications:
|School Size Rank||Division Classification|
This change resulted in several bands to receive different classifications between the SCHSL and the SCBDA. It is possible for a school to be a 3A school in the SCHSL and a 4A band in the SCBDA or vice versa. This is similar to bands being classified differently at local competitions compared to the state championships. Please consult the Marching Section of the Marching Section of the SC Musician for further information on SC Band Classification.