A reunion starts with one page nobody can lose
The difficult part of a school reunion is getting hold of everyone — half the class moved towns, a few changed their names, and the year-group thread stopped working years ago. Once you've tracked people down, they need one place that carries the date, the venue, how to pay, and why it's worth coming. That place should be a page you can send anywhere and that stays true when plans move.
Reunions don't have a dedicated design yet, so you build from the nearest celebration setup and write your own details onto it. The tools that matter are general and fit a scattered class well: a shareable page classmates open from wherever they ended up, replies tracked against names, reminders, and a place for guests to upload photographs.