Unviersity of Toronto-wha't its adamission?

High school students regardless of grades are encouraged to apply for university admission. However, unlike BC universities, UT does not publish GPA requirement.
"Generally, applicants who are competitive for admission are among the top third of their class. Possession of the minimum qualification in no way guarantees acceptance. Only applicants who have attained a high level of academic achievement, and who completely satisfy prerequisites will be admitted."
http://www.adm.utoronto.ca/adm/adm_general_info/adm_faq.htm#average
Admission to UT as a BC grade 12 student, you need to have English 12 + 4 other academic courses (except Com12 and CAPP12). If you are applying for BSc. programs where Calculus is a pre-req, you must also have CALC12 credits.

You will need 6 -- Grade 12 Academic Credits, not 12 + 4.

"Can anyone tell me what's U of T (main campus-St.george) admission (percentage) as a high school studnet apply?"

What are you trying to ask? What percentage????