in DD's Y1 class the children are put into groups for organisational purposes (lining up, where they sit etc).
The groups get points for "good behaviour" e.g. lining up quickly without fuss, sitting nicely etc.
The groups with most points get 5 minutes extra play on Friday. This is of course a heavily sought after treat.
DD came home this week with a sigh and announced that her teacher had reorganised the groups and as she now has X in her group, bang goes any chance of winning the extra play.
further crossexamination conversation revealed that there are 2 children in DD's class who always mess about, their groups never get the good behaviour points and never win the extra play. In fairness to the teacher, she does mix the groups about quite frequently.
But ... I did wonder if it was a good idea to operate such a behaviour reward system when it seems that it is negatively weighted around the odd mis-behaving child? Especially since the children are all clearly aware of who they are. (X was not in yesterday, DD was thrilled about this as it meant her group got a point - this can't be good for X surely?)