Few teachers or teaching assistants would take a class, or even a small group of students, without a lesson plan. This is certainly true when a lesson is due to be observed by a senior manager, colleague or schools inspector. Lesson plans will inevitably vary in content and detail, taking into account the subject matter, the needs of the individual students, the resources required and the learning objectives. Generic rules and boundaries governing behaviour and applicable throughout the school will be in place, together with some specifically related to a particular teacher or classroom, but these will not necessarily be sufficient to cope with the individual needs of some students. Therefore, in order to successfully manage the behaviour of students within the classroom, which in turn will also be variable, a comprehensively planned approach is necessary. It is vital to include a 'behaviour plan' within the overall plan before commencing a lesson.