flexibility of being a private candidate

The most useful aspect of being a private GCSE or A level candidate is the flexibility that it brings.

Why tie youself to the school or college where you are learning? Reduce the cliff edge and take the exams when you are ready.

The joy taking GCSE and A levels in your own time cannot be over stated. It means you have the control of how long it takes to learn to the fullest extent. So many university places, including the difficult and competitive ones would be in reach if the candidate decided to be private exam candidate. Taking control of when to sit the exams. Thus making sure they are ready. Rather than when their course has finished.

See here the 5 reasons to be a private candidate