Of course man...I go to SHS too. For the last two years the highest UAI was 99.85 which is pretty good considering both of them scored a top 10 rank in the state for Mathematics Extension 2. People like you probably think the school's crap because of the retarded english staff, but the maths staff kick ass. Nearly half the people who do Mathematics score 90+ in it. Last year there were 4 people in the state top 20 for Mathematics from Sefton, with one of them topping the state. Other state rankings include a girl who topped Accounting and one guy (from our grade)who topped Khmer Continuers, a girl scored 10th in Biology, and one guy scored 6th in Mathematics Extension 2 AND 2nd in History Extension. Ignore the lazy english staff and Sefton High School isn't bad at all considering that its partially selective.
Therefore that's proof that it doesn't matter what the rank of the school is, as long as you try your best....
Besides school ranks change every year based on how many band 6 or band E4 results the school, depends on how well your whole grade goes in getting band 6 or E4......Also, if there was such a thing called "selective school scaling", what happens to partially selective schools like us........?