I agree with mickyc and suzie. It's tough because we obviously don't want to loose money before we have too but we also want to be fair. Word of mouth is usually our best advertiser so I try to think about that when I need to deliver bad news.

Thinking about ourselves first is needed but I also think it can be done without screwing over others too badly. I am already trying to decide when to give parents notice and I'm not changing anything until next summer LOL

I think Torontokids has a good suggestion and I would likely tell them at that time too.