The Contest Guide is available here

Online registration will be open from 5 August, on this page.   All eligible applications from the 5th -12th of August are guaranteed a place provided they fulfill all the conditions, and late applications received from 12-16 August will be accepted only if room is available.
For High School senior applicants:  Please note there is a limit of 2 candidates per school, but a third candidate may be accepted if room is available. Candidates cannot apply if they are not endorsed by their school, and they need to declare on their application if they are endorsed  as first or second candidate, or if they are the third candidate, to be waitlisted.