The best known passage in Ecclesiastes, and perhaps one of the better known passages in all of Scripture, is the "A time for this, time for that..." poem in chapter three. Some commentators have seen here a profound and telling description of human mutability. A time to plant, and a time to pluck up what is planted. A time to do a thing, and then a time to undo it.
God bless you, it is awards season. Envy season. Extra credit season. Grades season. Mercy or justice? season. Born into trouble as the sparks fly upward season. A classical education isn’t about grades— a pious and believable fiction until three days before academic awards are given out at end of the year ceremonies.
In the summer, I stock up. By the end of the school year, I’m spent. I’ve said all my interesting things, and I need to find new interesting things for the following year. Over the summer, I stockpile new interesting things to say, then, come late August, I slowly begin ceding those things to my students. While all the old interesting things can be used again and again with classes who have not yet heard them, I find the electricity of explaining something interesting for the first time adds a necessary dynamic to the classroom.