Minerva McGonagall being the Headmistress to Hogwarts, her fellow colleagues and trusted friends, Pomona Sprout and Filius Flitwick Deputies. All students who were protected were assigned new quarters, new areas to have their classes and more. Of course, not all students had returned, because they were among the families who were given the choice to have their children home schooled or send them to be part of the Harvest.