I have never done this myself, but I know teachers who will use his/her cell
phone to call parents on the spot! You only have to do it once! My friends
who do this say it is VERY effective....more so than doing it after school.
You all as it is happening, tell the parent the child is disrupting the class
and put the child on. I don't know if there is any legal/or school policies
against this. It is not something I would do, but those I know who have done
this find it very effective!!!