Whilst the subject is fairly easy, it is not as easy as most would expect. The majority of my class are Year 11 students fast-tracking it. I'd recommended it to anyone who did I&E U1&2 in Year 10, otherwise focus on subjects with less negative scaling. There are only around ~100 students in the state that do it, so a handful of students get terrible marks in other subjects and it brings the whole subject down. I'd suggest reading the Study Summary to give you an idea of its difficultly.