Question: If I’m doing work for an examination does copyright matter?
Answer: Yes. The Examinations Boards expect you to work with materials that you have permissions to use – whether through a school licence or ones that you have obtained yourself.
Question: Can I copyright an idea for a new 'ap'?
Answer: No, you can't copyright an idea. But once you have fixed it then you can copyright it. Computer software is classed as a 'literary work' - i.e. it is 'written' - so when you have written the software for your 'ap' you can copyright your work. If you have the idea and get someone else to write the computer part you should agree the copyright BEFORE you do the work, to avoid any arguments later.