Two events make a trend?

Another example of life-imitating-lessons. Today with the 9.C, we had a test on the Medicine and Injuries unit. Right before the lesson one girl came and announced that she couldn't take the test because she was, well, injured. She had fallen in gym class and scraped herself up - and not put-on-a-bandaid scraped up, but actually being-sent-home-to-recuperate scraped up. Ironically funny.

But a bit worrisome. I wrote before here how I taught a unit on Crime to 9.C, and they almost committed crimes over the unit-end test. So is this a pattern? Teach crime, cause crime; teach injuries, cause injuries? Because the next unit is going to be Global Problems (global warming, wars, societal defects) and the results might be catastrophic...