Ms. Bixby's last day

Everyone knows there are different kinds of teachers. The good ones. The not-so-good ones. But Ms. Bixby is none of these. She's the sort of teacher who makes you feel like the indignity of school is worthwhile. So when Ms. Bixby unexpectedly announces that she is very sick and won't be able to finish the school year, three friends come up with a plan to tell her how much she means to them.