I think generally people who do SDD are pretty smart. I mean half the people in my class are the 4 unit maths, chess club, computer programming competition kinda people. I swear there's a bunch of guys in my class who completly fit the geek stereotype you see on television, the whole nerd laugh, "let's spend all our free time talking about maths", "argue with the teacher about some minor technality of a concept in the textbook until the teacher breaks down."
If this is the standard of the SDD candidture, how come only 0.23% of people got in band 6 last year?