Kamel, as a teacher, I'd make thew following changes:
BY the age of 13, I had lived in more countries than I could remember.
These include English, Norwegian and Somali, which I can SPEAK fluently.
I maintain a diverse choice of activities- I have many interests
anti-bullying
several recognized tournaments- what do you mean by 'recognized'?
I hold the record of 3rd fastest swimmer in the school- is this a recored- I'd say I am the third fastest