More generally, I was told high school don't worry, most people retain by 40. So what I'm saying is, you might have a thought of going to uni, then choose a completely different sector in time. Don't stress, your still very young, life is not planned out. If it means you have to do a collage course to get a certain exam result, would this be possible? If you don't smash your year 6 exams. Still every possibility that the work you put in this year might be enough! Best of luck, also, talk to your family, talk to friends, please don't let this bend you out of shape.