I started charging teachers more for a Sept-June contract with the holding for the summer which balances out to them paying for 3 days a week for the summer. I allow them to use up to 2 days a week in the summer free (from fees from the year) and any more they pay for. Generally they get sent one day a week so mom gets things done. I have been burned too many times in the past with them saying yes we will pay a fee for the summer etc and then come June don`t want to and are hoping you like them enough to give in and by June I have already turned down everyone wanting July/Aug start so the earliest I would be interviewing for is Sept anyways so they come out the winners. With the higher fee I come out the winner if they decide not to come in the summer or to return in the Fall.