Our Education Department sets up a series of meetings on the Outlook calendars of our classrooms for one-time classes.
They then send out a meeting request with multiple date options to the users who are planning on taking the class. In the past, the students have accepted one of the dates and their name was added to the calendar/Meeting for that day. Now more and more users are being added to ALL of the dates instead of just one. There is no check-box that says accept all or anything like that.
This is becoming more and more prevalent as the Desktop team finishes rolling out Office 2013. (yes I know what year it is. ;-) )