I depends on your teacher, ours made us do all the group work in year 11 so that we didnt have to do any in yr 12 (coz she didnt think it was fair to rely on other people for marks that go towards your HSC, and I agree)
Our Major works were a joke, we had like 6 months to do them, and they were only worth 20%. I did mine in the last week.
To answer the initial question, I did a Database about all the universitys and the courses they offer. It was pretty big, but not difficult. It was good for me because it was stuff I was looking up and researching for personal use anyway. Our teacher barely even looked at the final products though, just our journals and research and stuff. I got 100%. What a joke!!! One girl in our class got a 3%. Why would you bother?