Besides a full and varied academic curriculum, there is a wide range of extra-curricular activities available to the students of Combermere School. Parents and guardians should encourage their children/wards to participate in those activities that interest them, this will help to enrich their school life and further develop skills that last beyond the classroom and school days. The activities offered at Combermere are listed below. In the Combermere tradition, each First Former will be expected to take part in at least TWO (2) extra-curricular activities.
ACTIVITIES
| ACTIVITY | VENUE | TEACHER/PERSON IN CHARGE | DAY |
| Badminton | Hall | Friday | |
| Basketball | Hard-court | Mr S Mayers | Mon & Fri |
| Cadets | Parade Square | PCO Evans | Friday |
| Chess | |||
| Clarinet | ID | Mr. W Alleyne | Mon & Wed |
| Computer Club | IT Lab | Mr G Phillips | |
| Dance | 4C | Mr G Garner | Thursday |
| Drama Club | Hall | Mrs L Phillips | |
| Duke of Edinburgh | Biology Lab | Mrs S Belgrave | Tues & Thurs |
| Environmental Club | Biology Lab | Ms Hope | |
| Field hockey | AstroTurf (Wildey) | Mr I Smith | |
| Football | Playing field | Mr M Small | Tuesday |
| Girl Guides | 3F | Mrs M Lahai | Wednesday |
| Healthy Heart | F & N Lab 2 | Mrs. Annel | Wednesday |
| ISCF | Hall | Miss Prescod | Tuesday Thursday |
| Key Club & Builders Club | Sixth Form Pre. Fab | Miss R Rollins | Monday |
| Language Club | Spanish Room | Mr N. Vaughan | Monday |
| Lawn Tennis | Tennis Courts | Mrs D Waldron | |
| Literary & Debating Society | Library | Mrs. S. Williams | |
| Monday | Mr I Smith | ||
| Steel Pan | Music Room | Mr. D Gill | Weekdays |
| Thursday | Miss K Taylor | ||
| Tuesday | Mr K Luke | ||
| Violin | Music Room | Mrs J Knight-Lynch | Mon & Wed |
| Volleyball | Library | Ms C Brathwaite | Wednesday |