UC and Extracurricular

I know that UC’s check 1% of applicants on whether or not their EC’s are real. A lot of the activities I do are outside of school. For Ex:

  • Worked as a Cantonese tutor ( Speaking ) / I have a Chinese Tutor. ( Different dialects of Chinese, but would they think I’m lying )
  • Worked as a English tutor ( Mostly my cousins and sibling’s friends )
  • Worked at my dad’s business
  • Worked at my cousins shop
  • Frisbee club
  • Basketball club
    etc

I also have activities in school too.

How would I be able to prove these activities. I don’t want to be chose and not know how to reply.