dont be a thugs, thats just proving the teacher right get your parents to complain to the head and write a letter to the chairman of the governers demanding a public apology and write to any fieldsports ass ie BASC, CA etc explaining what happened and ask them to contact the school maybe arrange a visit and discuss hunting.
My daughter wrote a piece on hunting and ended up debating it in front of the whole school, at the start she had a show of hands for and against hunting at the start 70% were against when she had finished it was down to about 5% against so 95% had been educated and th