My sibling is currently attending a ivy league school I’m earlying - does this help me?
There are varying opinions on this. In my opinion, it doesn’t help that much because I have seen plenty of people get rejected from schools their siblings are in. Maybe a little, if your sibling is doing really well, so they think you’ll likely be good too.
When you see siblings at the same school, it’s more likely because they had a similarly rigorous up bringing so they both became very qualified.