It isn't very well written, but it seems to mean "on the same side of the road *as the school*" ="on the school's side of the road" "the road"= "School road" "pavement" means different things in different countries. In England, "pavement" means what Americans would call a "sidewalk"--the thing beside a road that people walk on. In America, "pavement" would mean the road itself--the place where cars drive. So, the sentence would have different meanings depending on if it were written in America or England.