I am not sure about the 30-day rule and the summer break; I have faced this issue but have always insisted that issues be addressed before the new year (including having summer IEP meetings) to make sure there was an effective IEP in place on day 1 of the new school year (which is required by IDEA).
bookwormde
The old IEP is the effective IEP until the new one is signed by the parents - federal law mandates this. So, if the parent refuses the new IEP, the school continues using the old one until the disagreement over the new one is settled. We do not employ staff over the summer, so there would be no one to call to a summer meeting.