they saw the football team on the field. They see basketball teams on the court. They assume a math teacher in the classroom is teaching and they see benchmark scores and such for other classes. They know bands are supposed to perform but haven't seen that yet. So rather than getting mad and throwing your hands up in the air with the "woe is me" attitude go show them what you are actually doing. Those "other" districts might have admin that better understand what happens BETWEEN performances. SHOW YOUR PEOPLE THAT!
And good luck.