The bit about getting permission is this: You have to fill in an Application To Study for each of your kids. This will give them the right to study as domestic students i.e. you don't have to pay international fees. Npw, I'm not sure how this works if you apply for PR from the UK but you will have to fill them out. Here, in NZ, we have applied for work permits, we were given these application forms at the same time and returned them at the same time at a cost of $200 per applicant. Taffy and WG said they had to fill one out for Rachael as well when they applied for PR, they were also in NZ. Maybe if you're applying from the UK they send them along with your ITA so it's all processed together and your kids are able to start school as soon as you arrive. That would make sense.
