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.

• Headmaster
• 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.