As part of that duty, teachers are required to supervise students adequately. This requires not only protection from known hazards, but also protection from those that could arise (that is, those that the teacher should reasonably have foreseen) and against which preventive measures could be taken.
School authorities in breach of the duty may be liable for injuries inflicted by one student on another, as well as for injuries sustained by a student. Schools normally satisfy the duty of care by allocating responsibilities to different staff. For example, the principal is responsible for making and administering such arrangements for supervision as are necessary according to the circumstances in each school, and teachers are responsible for carrying out their assigned supervisory duties in such a way that students are, as far as can be reasonably expected, protected from injury. This duty extends to intervention in single-sex areas if need be by a teacher of the other gender.
