First Day Back

When I asked Lily how her first day back was she said that it was pretty good.  I asked her what made it good and she said it was because almost everyone stayed on green all day.  Every student has a card that starts off green.  If they misbehave the colors work their way to red.  There are consequences with each turn as well.  Lily has been on green every day so far, though she has had a couple of close calls.

I wonder if this has a correlation?