It's not so great for the staff either. Instead of waiting an extra 10 minutes for a parent that's 10 minutes late, they now have to wait 30 minutes because the parent had to make a 20 minute detour to the grocery store to buy milk.

> A huge fine isn't always the best deterrent and it makes people generally mad at your child care center.

EDIT: You can make this revenue neutral. Give parents a discount at the end of every month out of the money they collect in late fines. People on time at a better-than-average rate will come out ahead.