For myself anytime I have before/after school kids the rules are as follows: Flat rate due only on the days child attends for before/after school. If child attends morning OR afternoon OR both, doesn't matter same rate. I do not give refunds though so if a child is going to be away on any given day I must be told in advance, then there will be no charge. Days that there is no school I would not charge any fee if the child was not here, if I have room and take the child I charge a regular full day rate. When it comes to spring break/Christmas/summer holidays I take the child if I have room (full day rate), if not then no charge.