I always find it interesting how school staff tolerate some behaviours better than others. Some teachers turn a blind eye to children fidgeting and fiddling whilst it drives others insane! I can cope with boisterous and energetic children but have a great intolerance towards children who always hang around adults, watch their every move and eavesdrop into staff conversations. I used to work with one 8 year old boy, who would even butt into a private conversations to add his say. My pet hate! My colleague tolerates this boy, but finds the 'bouncy' children irritating. Out of interest, what can you least tolerate in the classroom?!