sorry your teacher was such a pr!ck. i think people forget that psychology is a science and involves a fair bit of maths (research methods, inferential statistics etc) as well as science (mainly biology and neuroscience). if you're only in year 10/11 and thinking about a levels its probably very early for you to know what you really want to do and what you enjoy, and people will change their minds all the time throughout their academic careers. i'm not an expert on medicine but as far as i know maths is not a required a level for medical courses at uni and as long as you pass it at gcses you should be fine. i can tell you that you should pick your a levels based on what you know you enjoy and find interesting, i know a lot of people who are struggling because they just aren't interested in their subjects. psychology a level is a lot of content and hard work but it is quite well respected and because it covers so many skills (maths, science, essay writing, humanities) it is useful for almost any career or university degree that you might go in to. i think my best advice in terms of your a level choices is picking subjects you know you are interested in and will be able to work hard in, otherwise the workload will make you miserable. it's good to have certain ideas about your future in mind, but it's generally a good bet to just pick a range and keep it broad and as you go you will figure out what you like and what works for you. sorry that was so long!! 😇