S tier US/UK: Harvard/Yale/Stanford/Oxford/Cambridge
A tier US: Columbia/Chicago/New York
Local tier:
NUS/
SMU
A tier UK:
LSE/UCL/KCL
B tier UK/S tier AU: Durham/Bristol/Nottingham/Warwick/QMUL/Birmingham/Melbourne/Sydney/UNSW/ANU
A tier AU: Monash/Queensland/Western Australia/Adelaide
NZ/B tier AU: Auckland/Wellington/Tasmania
C tier AU: Murdoch/Flinders