Where I live, most kids have a classwide party into kindie or first, then a smaller friends only or all one gender party until about 8-10.Then things get quiet and a kid might do something with their BFF or a couple good friends. I think the last birthday party we did was laser tage when DS was going into 3rd or 4th- he was in a small school and we invited his class of 10 kids.Next big party is a bar mitzvah at 13 if they're Jewish. A few girls do a sweet 16 if they're not Jewish and didn't get a bat mitzvah. Most kids do graduation in leiu of an 18th. The boys who make Eagle Scout always get a party, but they're usually shared with other Eagle Scouts.
DD #1: 2012; MMC: 2014; DD #2: 2015; It's a boy! 3/31/2018