chxin imo academic scholarships to elite private schools (i.e melbourne grammar, scotch, trinity, plc, etc) are a bit harder than sehs, not to say that sehs in any regard is easy. the tests are pretty similar in difficulty, however, due to the fact that private skls consider other external factors, i think that a major scholarship (to alleviate the rich ass fees) is pretty difficult
edit: though i do encourage you/OP to try out for these skls, as it seems you've got a pretty ambitious mindset and mcq experience from sehs.
