There seems to be a huge variation in cultural norms, even between groups that are superficially similar. My kid goes to a school that has 2 campuses, just 9 miles apart, but with very different norms. The parents of kids attending one campus post lots of pictures of bed decorating parties, commitment day parties, move-in-day dorm decorations, surprise on-campus birthday deliveries of balloons, and graduation day events (where all the girls stand on 1 foot.) The other campus has none of that --almost no pictures of kids, no school sweatshirts, no school spirit. It is sort of like the differences surrounding gender reveal parties. In some social circles they are seen as a fun reason to celebrate and post, in other circles the thought is horrifying.