Well. The results from Round 1 don't count. So you won't see any results up there yet. Once all the stuff from Round 2 goes in, that's when you'll start seeing stuff.
To get into the Elimination Rounds (Round 5 onwards) a team basically needs to win all their trials (Rounds 2, 3 & 4). It's possible for teams to get in with only 2 wins and 1 loss, but that's when points difference comes into play. You'd need to win the two trials quite well and not lose by so many in the third trial.
There are 64 teams that go through to Round 5. The Law Society uses a quota system to work out how many from each zone. North Metropolitan is usually the biggest zone so they'll get more schools in. Say there are 60 schools in the North Metro zone out of 300 schools registered altogether.
That's 60/300 x 64 = 12 schools (maybe 13 schools) from that zone into the elimination rounds. You'll probably find that 8 of those 12 are undefeated and the other 4 got through with 2 wins and a loss.
Simple really. I think it's all in the Competition Manual anyway.
Still, it's only early days!