hi im a gr12 student in canada.
just wanna ask what is my grade equivalent to the RCM if i have completed grade 8 (perfomance) and grade 5 theory in ABRSM?
its urgent!

ABRSM Grade 8 practical = RCM Grade 9 practical
ABRSM Grade 5 theory = RCM Grade 2 rudiments

Are you trying to get high school credit using your ABRSM exam certificates, or hoping to major in music in university?

thankyou very much.
but do you have a website or something so that I can show my councelor?
yes im trying to get a high school music credit without taking the course

I don't think such a website exists. RCM Grade 9 and ABRSM Grade 8 are similar in terms of repertoire level; however, the specific requirements and the theory corequisites are quite different. You are better off taking the RCM exams and use the RCM certificates to earn your high school credits.

Why don't you try showing them the syllabus on this site?

Does RCM offer some sort of diploma system? AB grade 8 is the highest grade before diplomas, so that might be a way to make a comparison.

Might the UCAS (UK university entrance system) points available for a grade 8 be a useful indication?