I know that my boeferline for her school test score daughters ECs helped her with admissions though they were on thier face not all that special: they involved a long list of leadership positions in a large number of " regular old" school organizations. How do I know it made a difference. My daughter is now a tour guide and the head of admissions at a q and a info session used her ( anonymously) as an example when explaining they considered what they knew about a school or what they could learn from theGC letter. After discussing how they took into consideration rigor but also what they knew about school that didn’t have many Honors /AP options, she said " And when we see an applicant who is president of 6 clubs ( she named them) and editor of the Yearbook and editor in chief of the school paper we are going to look at whether this is a small private where that kind of list of ECs is the norm or a 650 person public where that large number of leadership positions is something very unusual. It’s going to make a big difference in admissions only in the later case" My daughter asked her later if that was indeed her and the admissions head said “Yes. I’ve been using that story since we accepted you very much based on what that told me about you. It’s a point I’ve wanted to make for a while.”
My niece with good but not top test scores ( but top grades) was I think probably helped by the unusual combo of her ECs: Head of Pom Pom squad President of Math Team with her success at top LAC S
In a scholarship interviews at USC resulting in a full tuition scholarship an unusual combo of ECs was talked about repeatedly by my friends daughters interviewers ( hockey team, pageant contest participant). She got the Scholarship over some more " impressive" kids