ranks don't change they're already set in stone but you will both get similar moderated school assessment marks by nature of having a very small mark difference between your rankingsAlso one more thing. I did significantly better in my externals than internals for every subject except maybe math advanced. If there is one student who has an internal of 65 and I have an internal of 63, but I get 83 in HSC and he only gets 75, could I move up in rank since we are so close?