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Greg James and Bella Mackie didn鈥檛 pay much attention at school. So they鈥檙e asking Britain鈥檚 most inspiring teachers to show them what they missed in this series of fascinating and fun lessons.

This week it's biology with Dr Monks, who teaches Greg and Bella why we get ill. The lesson reveals what a germ actually is, the pivotal role pubs have played in keeping us safe, and discusses why it could be important to stick your fingers in dog poo.

Bad students of all ages are welcome. Expect brilliant teachers, captivating subjects but absolutely no homework.

Get in touch with your funny school stories and teacher recommendations - email us at teachme@bbc.co.uk