How you fit into your school will depend on how it is structured. To a degree, this will differ according to the size of school and the age group being taught, but it will usually be a variation on the following:
Senior management team
Has overall responsibility for the school, its staff, its pupils and the education they receive.
Deputy head teacher
Plays a major role in managing the school, particularly in the absence of the head teacher. Often responsible for a curriculum area and/or specific areas of school management.
Assistant head teacher
Usually only in larger primary schools. Supports the head and deputy head with the management of the school.
Early years coordinator
Responsible for children in the foundation stage, leading the foundation team of teachers, nursery nurses and teaching assistants.
Key stage coordinator
Employed to lead and manage either Key Stage 1 or 2. They usually also have a class teaching commitment.
Special educational needs coordinator
Responsible for day-to-day provision for pupils with special educational needs.
Subject leaders and curriculum coordinators
Responsible for the leadership and management of a particular curriculum subject. Class teachers may be expected to accept responsibility for an area of the curriculum as part of their normal professional duties.
Plan, prepare and deliver lessons to meet the needs of all pupils, setting and marking work and recording pupil development as necessary. Includes advanced skills teachers and supply teachers. Often work in partnership with teaching assistants.