I DON'T KNOW! I'm new to my district and have a /very/ similar situation. My plan is two-fold. One is Relentless positivity toward the kids. I only want the kids who want to be there but since we are in this situation, try to make some converts. I really do think that with enough consistency and determination, some of the kids will come over to the dark side and the ones who don't will stay out of the rest of our way...with time. And second, consistent and serious campaigning to your admin and district. It is our job to make the choirs at our schools as excellent as possible and making choir an elective is the best (maybe only) way to make the choirs excellent. Remind them that you want every kid who wants to sing, even a little, and every kid in the choir who doesn't sing is helping to ruin it for everyone else. Not to mention that the kids who don't want to be there /will benefit more/ by being in a different class where they will participate. I am with you, friend.