Our time-travelling pupils and teachers arrive in the 1970s. It's out with the old and in with the new as they leave behind their 1960s Secondary Modern and embrace the experimental '70s and a comprehensive. In their first lesson, the boys and girls are finally mixed, as they learn about commerce and air travel; complete with a life-size model plane structure in the classroom. Role playing sees some of the class try their hand at being a pilot, air hostess or air traffic control, while others are confined to being the passengers and commenting on the service. In 1973, thanks to the bold demands of the Schools Action Union, this comprehensive becomes a free school and abandoning the rules has the teachers more than a little worried. Changing attitudes in the '70s mean that our class are taught progressive new ideas. Embracing diversity, dissecting the words of Pink Floyd, complete with incense burning, and digging up worms on the school playing field, are all part of the experience.