Chance Me: Great Rank, Not so Great SAT

Quick question on Penn State:
My older sibling was admitted c/o 24 to the college of engineering with weaker SAT (low 1200s), GPA, and ECs. I have always wondered if this is partially due to the fact the vast majority of our family has attended, including both parents. Does legacy status give me an edge at PSU - for both admissions and ideally the Schreyer Honors College?