What makes teaching worthwhile? We all know about the poor pay, low status, mounting stress, rising bureaucracy and disaffected pupils, but what about the positive side? BBC Radio 4 is looking for teachers who maintain their enthusiasm and passion - at least some of the time. It could be a satisfying regular event or an single unexpected incident, but if you feel you could write 2,000 words about it, and read them on Radio 4, write to: Beaty Rubens, Room 8059 Broadcasting House, London W1A 1AA