Below is information from Davine Davis from MSHSAA.
To be able to participate in any 2015-2016 music activity that is MSHSAA sanctioned, your school has to register through MSHSAA. This is usually done by an administrator. This also applies to MSHSAA Junior High/Middle Schools as well. Attached to this email is an excel document listing all schools (high school, junior high and affiliate) who have registered as of . Please check to see if your school has indeed been registered and if not, contact your administrator right away. If the school is not listed in this document the school may not participate in any MSHSAA music activity.