Well it can effect you application but to be honest if you got an admission letter from the college than the VO dont care what your marks are..It is the college's duty to actually asses your qualifications and if they are ok with it than generally visa officers dont have problem with it..But just as a precaution make a good SOP stating you plans in Canada and also about the change a Canadian education will bring to your life..I didnt had good marks in the 10th grade either but i made a good SOP and I was granted a visa and now its been one year living here

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