From my own experience, I wouldn't consider my self to be anywhere near gifted at all and I managed to achieve over 99. It's important to remember that, although obviously this varies depending on the subjects that you are doing, the HSC is about repetition and preparing correctly across the whole year, rather than testing how 'gifted' you are. You also need to remember that being 'gifted', as I observed amongst people in my own cohort, doesn't automatically translate to amazing marks > I had a good friend who could tell you really eloquently about all of our english modules and texts, but his HSC marks were mediocre (at least in comparison to what he could've achieved). The reason that this happens I think is because people fail to think of the HSC exams as a skill to be practiced and learnt rather than just testing how smart you are or even how knowledgable you are within the subject > for example, you could be really 'gifted' at creative writing and get a great mark in Extension 2 English, but your marks in the creative writing sections in EE1 and Advanced could be much lower because you fail to practice writing under pressure, in timed conditions and recognising that you're going to have to write this piece whilst in the back of your mind considering the next section of the paper. In this sense, I think that what really differentiates people is the amount of preparation they've put in, and then from a certain point how good their exam technique is (which, as with the case for a lot of people in my cohort, I think is often the difference between just scraping a B6 for example, and moving upwards from there.) It's also important to remember that, whilst you'll obviously never know the actually question on the day, knowing the format of the questions, the general format of the marking criteria and the syllabus dot-points you can be assessed on makes getting a good result much more about the effort you put in. The trick I think for people going into the HSC or doing it currently is to realise that you actually have a lot of time to prepare, but that to succeed you need to be spending a sizeable amount of the time you spend studying actually practicing under exam conditions > if you can force yourself to do this consistently, I think how 'gifted' you are becomes pretty irrelevant. From my experience, being 'gifted' at particular subjects can get you to a certain point, but, as mentioned by the first poster, the vast majority of people who get 99+ get it from hard work more than anything else