I’m in year 10 now. Last year, I did foundation GCSE chemistry and learnt up until around halfway through C5. I understood it well enough. However, this year, we have so far gotten up to around C8 and I have genuinely learnt nothing this year. My teacher is deaf, and I can’t understand what he’s saying, and I can’t switch classes. My grade has slipped down by 2 grades and I’m very worried, what can I do to get back on track?