I've overachieved my should gets by quite a lot. My should gets based on primary school were 2×8, 4×7 and 3×6. Now based on first term Year 11 my predicted are all 8s ands 9s. I have made the most progress and my teachers call me diligent and compare me to 'a machine' in awe of my hard work. I assure I would do the necessary work so that my predicted after my mocks are mostly 9s. No teachers can guarantee that you'll get a 9 in everything, my school also do predicted in a manner that doesn't reflect what you should actually get but they make it lower on purpose so that you can do better to achieve the highest. This is what our teachers told us.