I have call the school today, howcome they said they haven't send out the letter, they said they will send out today or tomorrow, and ask me wait until next week!
My son, an external student, got an offer for the regular stream.
Now my mind can be at ease, for there is at least one offer. Personally, I prefer Canada's system -- if you want to get into a reputed public school, just spend the extra $$ to buy a house in that school district.