When do nursery admissions usually open at KLM Queens High School in Saidabad?

Our son is not yet two, and I know this is early. I handle most of the childcare planning in our house, though, and I would rather have the dates in a calendar than hear about them from a neighbour the week forms close. KLM Queens in Saidabad is one of the schools we are looking at for nursery. I have seen different months mentioned for different schools, and I don't trust the forwarded messages that go around. For parents who applied there recently: roughly when did the forms come out, and was it first come, first served, or was there an interaction?