The school nurse made an announcement during one of my classes. My co-teacher told me the school is experiencing a conjunctivitis (no, she didn't say "conjunctivitis") epidemic and the nurse was telling everyone how to avoid contracting it.
The principal made an announcement a few minutes later. He said that any student who intentionally contracts conjunctivitis will be punished.
(Yes, students are exposing themselves to pinkeye to get out of school.)