Hi I go to a religious school but the problem is I don't believ in god.should the teachers give pupils the right to chose if they want to do it the could read instead

Want to do what? Participate in religious services?

You can read up on things even if you don't believe in them. It can help you be informed and establish why or why you don't believe what you believe and broadens your perspective on things. Ask yourself why you don't believe and challenge yourself to find answers to these questions through reading all aspects of the subject. Look at reading what your teachers give you from a how to do a debate perspective.