Hopefully not clueless about answering the interview questions, just about what to wear! 
I have an interview next week for a primary teaching assistant position. I know the school pretty well and it's not a suit-y sort of a place, the younger teachers tend to wear jersey dresses / tunics / leggings boots type combos, and the older teachers smart trousers / knitwear.
Please dress me!
Is a suit overkill or would it be expected for interview?
If not a suit, then what?
Tall, size 14, feel that shirts make me look masculine... do you need any more information??
Thanks in advance