For some reason the recurring events don't work with my calendar, so I create one class lesson, and then I duplicate it 5 times for my 6-lesson classes. When I duplicate the event, everything duplicates except the label, which I need several times in any class session.

Sorting events is even clearer than the search function when I use the labels to sort things, as several classes have similar designations because of the level people are working through. I've got 5 classes x 6 lessons x 6 times/year, so sorting by label becomes an important part of keeping things organized and calm. :)