I did in first grade... XD; Thankfully my teacher just gave me the work to do later.
In college, I'd kind of doze off in my Geology class sometimes, as it was my first class of the day and it was kind of dull. Also did a few times in Art History, which is weird, because I loved that class. Maybe it's because it was after I ate lunch, or maybe it was because of the room itself. *shrug*