hi
at dd's interview (NSW catholic as well).
The principle started by sitting down with DD and asked her to write her name and colour a picture.
He then got out some blocks and asked her addition and subtraction questions (all under 10 ie 8-4 etc)
Then he got out a book (early reader) and asked her to read it with him. it is a book which repeats the sentence with 1 word variation ie - this is a circle, this is a square.
he listend to see if she recognised the words being repeated and new the shapes and colours.

He then talked to us about the school and its ethos and invited us to ask questions.

HTH