I don't know what to do. Picked up my ds (4) today and had to see class teacher who asked us to go and see the Head. Ds has already been last week for biting an older child. He came out with a black eye yesterday after rough play that was "6 of one and half a dozen of the other" and today has kicked a dinner lady and pulled his tongue out. Have encouraged good behaviour last week as he came out with certificates for good days. Any suggestions please?