Do Top Canadian Colleges Consider American GPA or ACT?

Well junior year I’ll be taking two APs. If I cannot take two APs this year, I’ll take one AP class, a Dual Enrollment class, and an honors class. I haven’t taken standardized testing yet so it would be nice to get an opinion on what ACT or SAT score I should aim for. My GPA is a 3.11 Weighted but I hope to get it to a 3.4 or 3.5. However, I’ve heard that Canadian schools only take junior and senior years into account and then combine those two years to make a GPA. Is this true?