I asked LO's teacher yesterday what they do. She said that they start when the parent says they are starting at home. She said for the most part they will take the child to the potty at regular diaper changing times which is every 2 hours, and any other time they say they need to go potty. But she specifically said, "We do whatever the mom asks us to do." She didn't mention anything about pull-ups or training pants vs diapers, or rewards.
LO is almost 18 months and is showing a lot of signs of potty readiness. Yesterday she took off her wet diaper and threw it away on her own, haha. I don't plan to push her as I know she is young for potty training, but we are going to introduce the potty, and if she really goes for it, I would like them to eventually be consistent at school. I am just not sure what to even ask, when that time comes!