I think our kids found out at least a few days in advance but they all kind of knew it was a strong possibility. DD was Class President so she just planned on a speech anyway, knowing she was most likely also val. Sal wasn’t determined until a few days out because it was so close (and they ended up calling it a tie). One had been hinted by the GC to start writing, and is a good writer who could whip something out quick. The other one DD shared her speech with and they took turns reading parts of it!