 There s mutiny in the air over the school rulebook - from the staff as well. Trevor s still getting stick over both the business of the Grange Hill Ghost and his squeamishness in biology. Trevor compromises that he ll go along with an exorcism if the others cooperate in playing the humming game with Mr. Scott. Mrs. McClusky is angry about the rulebook, saying that it undermines her authority. In Mr. Scott s registration, Trevor goes too far, and Mr. Scott, angered beyond the limits of his self-control, advances on the boy. He pulls back his fist, but a call from one of the girls pulls him back from the precipice, and the situation is defused. A radio sit-in is organized as a protest against the rulebook. Danny Kendall makes a re-appearance and is told about the planned event, but seems to have no enthusiasm for the situation. Danny notices Julia go into Mr. Bronson, and works out that she been spying on her friends. She explains about the ski-trip, and claims not to have said anything of importance. Outside school, Ant waits for Georgina, with two accompanying St Joe boys. They notice Danny Kendall, whose car narrowly avoided them when Danny was being driven back to school. They start fighting him, but Ant comes to his rescue, and a fight ensues. When St Joe withdraw, they promise a proper fight the next day - Grange Hill versus St Joseph s - but where will Ant Jones s loyalties lie?