Generally the secretary has permanent records of everything. Like the above person said, attendance, and what went on in the meeting. Some big clubs require you to have a formal outline of what went on at the meetings and stuff (like Key Club, I know) if they want awards or whatever.
For me, as I am secretary of 2 clubs, I have to record every member and their information from applications (such as student ID, e-mail, phone number, grade), and since one of my clubs require community service hours, I record that as well.
For my other club that doesn't, I just basically record everything but community service hours and turned in permission slips because our club has field trips & conferences.