This is a question that can be answered by your school guidance department and college admission counselors. They can look at your coursework and see how your credits match state requirements. Some colleges will work in tandem with local high schools so that a student can graduate early.
Sorry, we are unable to give you direct information specific to your own school studies here at Education.com.
It depends on your age, and where you are from?
Have you finished high school, and if yes then you will be able to contact your local colleges and sixth forms (a-levels), to be able to join the courses when the start.
generally in the UK, you can only really do a full time course if you are not in full time education and of a certain age,
however some gcses qualifications that you may be taking, already taken or going to- some courses are run through college from the school.
i hope this helps,
There are always students on campus to tutor and to help those students needing help. Go to one of the colleges in your area and ask about finding someone to help you get ahead. They love people wo want to learn and are motivated to get going woth their education. Good luck!