The purpose of boards should be broad oversight, not micromanagement. One way to lessen the opportunities for boards to meddle in day-to-day activities of university administrators is to schedule fewer meetings. I’d suggest holding one annual meeting per year. Two at most.

Could a board really accomplish all its work in just a single meeting?

Absolutely. But only if the board understands its job correctly. Board members who are worried about fewer meetings are saying, in so many words, that they don’t trust the administrative leaders they hired to do their jobs. If that’s really the case, they should hire someone they can trust to do the work without constant monitoring. Then they should get out of the way.