4U doesn't get that hard, but the difficulty does increase a little. Don't worry, if you're getting around 70-80% in 4U you should be okay. I reckon you could keep all 12 units until the half yearly? (that's what I did, although with 13, then dropped down to 11)
70-80% in 4u? isnt that like pretty good ? :L or maybe i just hear rumors about the whole scaling thing
just did the roots of unity omega things at tutoring, so lost D:
but yeah i dont want to do 12 units because, i am struggling to keep up with everything
but the thing that almost made me drop physics is that alot of people are already PRO at physics ( 95% + in every test easily) whereas i am still learning ( i know i can 90 up if i study hard, bludged all of year 11 fml)
ill keep them untill my first assesment tasks, if i fuck up bio prac then ill keep phy, if not, ill drop phy or 4u :S