When do marks matter in highschool for university entry?

Question

Grade 11 or 12,I think grade 12 is the most crucial

Answer 1

Grades 11 and 12 are the most important but colleges will look at your scores from all four years

Answer 2

It matters from the time you enter high school because all those grades are going to determine your total grade point average.

Answer 3

freshman, sophmore, junior and senior year all matter