Theoretically, no. Risk assessments should be done by the employer for all employees. Most will just be a general all-staff one, such as ‘don’t stand on tables to put up displays’ etc, but specific ones need to be carried out where a teacher’s circumstances warrant it, such as a pregnant teacher in a class with kids who are known to become violent etc. In practice teachers as humans are often overlooked. Remember the teacher who was raped by a pupil because she hadn’t been told it wasn’t safe to be alone in her class? The risk assessments should have identified that female teachers were at risk in that school, but even if that had been done it clearly wasn’t acted upon. Every employer in the country has a duty of care towards its staff.