Sorry for a late reply!
Yes my daughter also got admitted to P2 SPC. This coming Sept she will go to P3 there.
If you did not receive call on the same day or the following day.. that say you will receive a waiting letter. Last time, they also asked us to bring self-stamped envelope to admission test. So, for those receive letters will be either rejection or waiting list.
Yes its a bit too late now. If there is vacancy.. they will sort out all these before their holiday starts.. teacher or principal needs to be on holiday too. You can target for next year.