Somerset House is directed by a Board of Governors and is an Incorporated Association Not for Gain (Section 21 of the Companies Act). The day-to-day operational functioning of the school is managed by the Headmaster and staff.
- Deputy Headmaster
- Bursar / Business Manager
- Head of Department: Pre-Primary
- Head of Department: Junior Primary
- Head of Department: Senior Primary
- Head of Educational Support Unit
- Facilities Manager
- Head of Sport
- IT Manager
Other non-academic functions like grounds, catering, cleaning, maintenance and security fall under the Facilities Manager. The school also outsources some non-academic functions.