Here's the "feedback form" of which I spoke this morning. It was filled out by 11-year-old Megan Cross at the end of her school year and tweeted by her dad. She says her teacher shouldn't use collective punishment in the future on the class because "under the 1949 Genva Conventions (sic) it is a war crime."
The Daily Dot says...she's right (sorta).
According to article 33 in the fourth convention, the treaty states, “No protected person may be punished for an offence he or she has not personally committed.” Meanwhile in article 50 of the same convention, it states, “No general penalty, pecuniary or otherwise, shall be inflicted upon the population on account of the acts of individuals for which they cannot be regarded as jointly and severally responsible.”
Of course, Megan's assertion falters when you consider that her school is not at war and is not in occupied territory.
But Twitter was glad to decide the question of whether she deserved grounding or ice cream: