"Teacher's Luncheon" means that only one teacher could attend.
"Teachers' Luncheon" denotes the plural form, i.e. a luncheon for many teachers.
There teachers because they are made by a government and that's were they get there money from a lilttle.
Yes if it's okay with the teacher, especially if you're in kindergarten and can't remember your teacher's name. No if it's not okay with the teacher. I would ask first. It may be disrespectful. If...
mrs. r
www.gofistyourself.co.uk
thanks for being with us every school days....i really appreciate the things that you share to us and a very excellent and suffiecient education..