Am I correct, first of all, in assuming that your current school has a different half-term holiday to the one you've applied to? Or am I misunderstanding? Secondly, are you also saying that if you discover the interviews are on one of the 'surprise better-not-be-kayaking holiday' days, you will tell your husband the trip is off? I ask, because it's only worth you even considering contacting the school if you're definitely intending to attend. If you do, I'd suggest saying that you'd be grateful if they could let you know as you'll need to do a bit of domestic re-organising if they do invite you for interview. I don't think a school HR person would feel you were being pushy about that.