Different schools will have different set ups. Most schools have some options which are compulsory, such as English, maths, science, ICT, citizenship, religious education (RE) and physical education (PE), as well as some options left for free choice.
There are three main things you need to think about as youre picking subjects:
1. What do you enjoy?
2. What are you good at?
3. What will help you in the future?