Interesting, and new classes start today at my university. When we had April fools as the beginning of classes two years ago, I had a quantum mechanics teacher who introduced himself in French and claimed (in French) that it would be okay that he didn't speak English, because mathematics is the universal language. I do wonder if anybody will try to pull something like that this year?
And I further wonder why the first day of classes is on April 1st again? Somebody in administration must think it's funny....