Here we usually start to teach it in level B (could be compared to level 3) which is the first compulsory level. But at that stage, they are spotted of course. Usually the kids start to hit handstand by themselves when they are level Ds, but NOT from kip cast at this point. In level E (like level 6-7) a handstand is a requirement but there are kids who can't get there by this time. In level F (like level 7-9) pretty much everyone has it.