All three are ISIA members, which means they share the same international standard at the higher levels. BASI is the UK governing body and is respected worldwide, particularly in Europe. CSIA is the Canadian body and the qualification most Canadian ski schools hire against — if you want to work in Canada, this is the one to get. NZSIA is the New Zealand system and runs only to Level 2 (no Level 3 equivalent). For our programmes in Canada, CSIA is the pathway. If you already hold a BASI qualification, speak to us — your existing level can sometimes reduce the training time you need.