International student from US wanna re-take SAT & AP in Canada for application

<p>Hi this is my situation.
I graduated from US high school at 2008 and then I was out of
school for 4 years. Now I am in Toronto and I would like to
attend universities over here. However, I only studied in the US
for 2 years of high school education because I immigrated there
when I was at the age of 15. So this is not fulfilling the English
requirement for UofT. Furthermore, I took SAT when I was still
in high school but the scores are not nice enough for me to enter
UT(York is ok with the scores). Thus, I would like to retake SAT
from the GTA area ASAP. Besides that, I never take AP test in the states
but I would like to take 4-5 subjects as far as I would like to apply
UofT. I don't know how can I take these tests in Toronto and
where can I find the materials for self study. Thanks for
reviewing my question!</p>