Chances of getting into sixth form.

Hi, when i turned 16 i decided to leave secondary school (I know it was stupid), i had previously did alright in my gcse getting mainly Bs and some Cs, and i did complete a lot of the gcse doing about two of the three maths exams, most of the english exams (only having one exam left to do at the end of year 11) and some science as well other things.

So anyway I recently applied to long road sixth form college, and i have got a interview soon, and was wondering what are the chances of me getting accepted into the college studying a levels.

Also do sixth forms interview every single application they get, even if they have no chance of being accepted.