I charge half rate for the summer, so they give me $90 per week and keep their kids integrated part-time to a schedule that works for them. They also have a weeks holidays that they save for the summer plus my week off, so that helps a bit. I have been burned before, but even with a higher rate they can still choose to leave come June. I just keep my waitlist handy and interview potentials that need care starting at the end of the school year and contact them right away should they give notice.