As difficult as it may seem, just ignore them. I think it's terrible that a select few in advanced classes tend to look down on those doing standard. The people who do shame others for their chosen course level tend to be the ones not performing amazingly, that's definitely the case at my school anyway lmao.
Each year there are plenty of people who fulfil their potential in standard!! It takes a lot of hard work, but it would if you were in advanced as well. I recommend reading a myriad of different text types to extend your vocabulary throughout the year (I did so in year 10 and still do, and saw a significant improvement in my grades) and maybe before this term starts, compiling a list of both commonly used and unique techniques that you can discuss in future essays (doesn't have to be too long or arduous haha).
What text are you doing for the common module? I'm in advanced, but also read the standard text as I am still deciding which course I'd like to pursue in year 12 and could share the quotes I thought were relevant to the concept of human experience and my (very brief) analysis if you're doing the same text!