The Co-Curricular Activities (CCAs) offered in secondary schools can vary depending on the school and country, but some common examples include:

1. Sports: These can include traditional team sports such as basketball, soccer, volleyball, and netball, as well as individual sports such as athletics, swimming, and gymnastics.

2. Performing Arts: These can include music, dance, drama, and choir.

3. Clubs and Societies: These can include a range of interests such as photography, robotics, debate, chess, and environmental awareness.

4. Uniformed Groups: These can include the Scouts, Girl Guides, National Cadet Corps (NCC), and St John Ambulance Brigade.

5. Academic-based CCAs: These can include language, science, and math clubs, as well as literary and journalism societies.

6. Community Service: These can include volunteering in local charities and non-profit organizations.

It's important to note that not all schools offer the same range of CCAs, and some may have additional or unique options based on their particular focus or location.