- Group Name
- Seminole Ridge HS
- Hometown
- Loxahatchee, FL
- Contact
- Anita McClane
- Website
- http://www.Seminoleridgeband.com
- Group Name
- Serrano HS
- Hometown
- Phelan, CA
- Contact
- Matt Fell
- Group Name
- Seven Lakes HS
- Hometown
- Katy, TX
- Contact
- James Vinson
- Website
- slhsband.org
- https://www.facebook.com/sevenlakesband
- Group Name
- Seymour HS
- Hometown
- Seymour, TN
- Contact
- Zach Elgin
- Website
- http://www.seymourband.org
- Group Name
- Shadow Mountain HS
- Hometown
- Phoenix, AZ
- Contact
- Craig Harris
- Group Name
- Shelton HS
- Hometown
- Shelton, CT
- Contact
- Philip Kozan
- Group Name
- Sherwood HS
- Hometown
- Sherwood, OR
- Contact
- Byron Hall
- Website
- http://sherwoodsbands.org
- Group Name
- Sherwood Middle School
- Hometown
- Sherwood, OR
- Contact
- Byron Hall
- Group Name
- Shockwave
- Hometown
- Findlay, OH
- Contact
- Brian Sheehe
- Website
- https://sites.google.com/a/findlaycityschools.org/shockwave
- Group Name
- Siege Percussion
- Hometown
- Mount Dora, FL
- Contact
- Jonathan Otero-Ramirez
- Website
- https://siegepercussion.org
- https://facebook.com/siegepercussion
- https://instagram.com/siegepercussion
- X (Twitter)
- https://twitter.com/siegepercussion
- Group Name
- Sierra Vista HS
- Hometown
- Las Vegas, NV
- Contact
- Melissa Bushee
- Group Name
- Silverado HS
- Hometown
- Las vegas, NV
- Contact
- Jeff Lance
- Group Name
- Simon Kenton HS
- Hometown
- Independence, KY
- Contact
- Jason Milner
- Website
- http://www.simonkentonbands.org
- Group Name
- Skiatook HS
- Hometown
- Skiatook, OK
- Contact
- Blake Chilcoat
- Group Name
- Skyview HS
- Hometown
- Vancouver, WA
- Contact
- Shawn Anderson
- Website
- http://svbd.org
- Group Name
- Sonia Sotomayor HS
- Hometown
- San Antonio, TX
- Contact
- April Lara
- Group Name
- Souderton HS
- Hometown
- Souderton, PA
- Contact
- Alex Lukens
- Group Name
- South Albany HS
- Hometown
- Albany, OR
- Contact
- Colorado Paniagua
- Website
- https://sites.google.com/albany.k12.or.us/southalbanybands/ensembles/indoor-percussion
- Group Name
- South County Combined Schools
- Hometown
- Lorton, VA
- Contact
- Kevin Engdahl
- Website
- http://www.schsbands.org
- Group Name
- South Forsyth HS
- Hometown
- Cumming, GA
- Contact
- Eric Brown
- Website
- http://www.sfhsbands.net
- @southforsythpercussion
- Group Name
- South Jones HS
- Hometown
- Ellisville, MS
- Contact
- Tyler Jenkins
- Group Name
- South Lakes HS
- Hometown
- Reston, VA
- Contact
- Grayson Fore
- Group Name
- South Pasadena HS
- Hometown
- South Pasadena, CA
- Contact
- Howard Crawford
- Website
- http://SPHSmusicboosters.com
- Group Name
- South St. Paul HS
- Hometown
- South Saint Paul, MN
- Contact
- Vladislav Boz
- Group Name
- South Torrance HS
- Hometown
- Torrance, CA
- Contact
- Niko Jasniewicz
- Website
- https://shs-torrance-ca.schoolloop.com
