All I didn't really need to know I learned in the first three weeks of kindergarten:
1. If the teacher says it, then It Is So. "Mommy, we can eat that brown stuff on the apple. It's just from air."
2. There is a fish called a wrasse that specializes in cleaning the teeth of other fish by swimming into their mouths and eating leftover food. Yum!
3. "Dear Parents: We have had a case of head lice reported in your child's classroom ... "