I don't know your mother nor your relationship with her. I wouldn't burn bridges but if you could really debate her on it then perhaps give that a try, I'm not saying an all out fight because you are her child and you won't win. A debate might help. Give legit cons as to why you shouldn't go.
If that fails and you do go (which from what I've read in the other's comments other than the religious aspect of it you might be better off education wise in a private school but that isn't for me to judge since I know nothing of private schools) don't be rebellious. The last thing you want is to start something that gets you in trouble. In school and under 18 means you have no real 'rights' which means all freedom of speech and protesting you want to do will do nothing for you. If you think real debate wouldn't get you in trouble I say go for it. Most likely though it will and that will lead to more problems. It may not be fun and it may be a long few years but it is better than having all out war with everyone you know, not getting your diploma, and hurting your future. When you are old enough you can branch out, say what you want, and do whatever you want you just gotta get there first. Good luck sweetie.
If that fails and you do go (which from what I've read in the other's comments other than the religious aspect of it you might be better off education wise in a private school but that isn't for me to judge since I know nothing of private schools) don't be rebellious. The last thing you want is to start something that gets you in trouble. In school and under 18 means you have no real 'rights' which means all freedom of speech and protesting you want to do will do nothing for you. If you think real debate wouldn't get you in trouble I say go for it. Most likely though it will and that will lead to more problems. It may not be fun and it may be a long few years but it is better than having all out war with everyone you know, not getting your diploma, and hurting your future. When you are old enough you can branch out, say what you want, and do whatever you want you just gotta get there first. Good luck sweetie.