The teen years are a time when many young people start questioning the beliefs they were raised with. Most return to the faith of their parents but, having gone through a time of questioning and contemplation, they come back to it with personal commitment instead of blind acceptance. There is nothing wrong with you for going through that process.
However, it isn’t helpful to you or to your family for you to insist that the family and school cooperate with your personal journey. You are challenging beliefs they hold dear. They are frightened that something bad will happen to you if you persist. You aren’t going to change their minds. You have no right to push your opinions on them.
What you are going through really is very personal. If you are clear and comfortable in your beliefs, you don’t need others to agree. You don’t need to announce your convictions to the people you know will only be upset by them. Instead, continue to question, to read, to think, and to confer with others who have wisdom to offer you. Go about the business of your daily life as a mature, thoughtful person.
This isn’t “giving in”. It’s keeping your private thoughts and beliefs private out of respect for the feelings of others. When you are older and have left home, you will surround yourself with people with similar beliefs. Your parents won’t be any happier about it but none of you will have to live with daily conflict and upset.
I wish you well.