I also went to Hogwarts and while I'm not quite as ancient as you, it was brilliant fun and totally hedonism (in the late 80s early 90s). Similar to you myself and my pals were caught taking a load of brewing kit into our house at school. Boots had called our housemaster to say we were buying it (damn house ties). He was a soft touch and rather than punish us let us brew it with him as a project. Certainly took all the fun out of it, but were were about 15 or so, so it was kind of him.