It's really up to you.
Do you have a passion for English? If not then I do recommend you to drop, because you will achieve better marks in Standard English, whereas you wouldn't in Adv.
Talk to your teacher, thats what I would do :-)
WHY IS ANCIENT FUN :( Right now for me, its slow and boring ... I don't hate it, nor do I love it.
In class mainly use sources to write an essay about 'what happened in an event' etc, you get me? : D
Ad. English
Ancient History
Biology
Chemistry
Extension 1 Math
Physics
I heard scaling only affects those 'within' the class of a subject, but I'm not quite sure.