So my chemistry teacher has a playful rivalry with the other teachers on her hall and yesterday a teacher anonymously left a note on my teacher’s board that said, “My students are better than your students.” So instead of guessing who it was my teacher went around the entire hall and stole pens out of every classroom and, as “an experiment in chromatography," got us to drop water and rubbing alcohol on the note and sample marks made by the stolen pens to see what color the ink turned and when we figured out whose pen was used to write the note, she went to the teacher in the middle of class and confronted her about it.
~ Latatette