URGENT! About piano exam levels between rcm, trinity and ABRSM, also about Unionville HS and Milliken Mills HS?

1. About grade 9-10. The technical tests from RCM is more difficult (addition to the scales and arpeggios, there's a "chords" section), as well, RCM Grade 10 requires candidates to prepare SEVEN pieces compared to THREE for ABRSM (5 repertoire 2 studies)
2. Since it's a diploma exam, I guess ARCT.
3. No, it's non-existent here in Canada. People mainly take exams from the Conservatory Canada or RCM.
4. No, one has to audition to be in the Arts program at Unionville highschool when they're in GRADE 8.
5. Both of them are good schools, they all offer a variety of courses. Cultrally diverse (mainly Asian though) Personally I would go with Unionville.

I just play for fun, not on an organized team. I played park and rec basketball last year to test out organized basketball, and I didn't like it. I just like getting a group of friends and doing whatever I want, not what the coach draws up for me. The superstar on my high school freshman team told me I was better than most of the other freshman players, so I'm guessing I would have made the team if I tried out haha.