Obviously you people are misinterpreting what I said, let's take a different look at this person's ranks:
English 47/195 (trial 90/105) 46 people in front
3u maths 24/166 (80/84) 23 people in front
4u maths 34/99 (91/120) 33 people in front
Phys 8/108 (90/100) 7 people in front
chem 7/115 (89/100) 6 people in front
bio 4/54 (87/100) 3 people in front
I don't see this person getting 99.95 with all those people in front of him/her at Baulko, plus the others who will get higher marks in the HSC from other schools. I just can't.
He'll probably get these hsc marks (rough guesstimate)
English = 93
MX1 = 97
MX2 = 92
Phys = 94
Chem = 94
Bio = 94
For 99.65 using
http://hscatarcalculator.com.au/
I see what you are trying to say, but you didn't take into account that many of those that are beating him in any of those subjects, for example, the 46 in English, may not be beating him overall, i.e. some dude rank 10 in english may be majorly failing in his other subjects, etc.
Those ranks will probably secure him like 10-15th in his school overall, and this is what we should take into account.
You are right regarding the fact that his chances of getting 99.95 will be slim though.