Peter great minds that's for sure if there was a scam at school my mate and I where running it even flogging the free school milk till we got caught got the cane many times and moved onto another way like selling the correct home work . putting bets on school football , boxing etc . My mate broke the ink pens nibs shoved 1/2 in a straw pushed a matchstick in the straw and used a dart board hidden . No wonder they all went into business . It still makes me roll with laughter