School boards really struggle with the Open Meeting Laws (sometimes called Sunshine Laws). Like this one in Iowa (h/t S.M.).
Here is a compendium of every state's Open Meetings laws.
Also, most states have a handbook on Open Meetings laws for new board members and most are online. NSBA has some of them here.
This strikes me as a great opportunity for an instructional video in states. Law firms could really help themselves here because one of the first things a new board member would watch is an instructional video with your name on it. Just saying ...