No - Your country's secondary school diploma may not mean a diploma equivalent to a Canadian Secondary school diploma. You may need to get it assessed by a Government approved agency before acceptance for admission in Canadian College or for Visa purpose.
However, if you have a SSD or HSC from outside Canada and have completed any post-secondary diploma from a Canadian Institution, you may submit only the copy of diploma without SSD or HSD and Can-College may accept it without ECA or assessment.
