No 'official' preschool here. But I believe we are all teachers of these children. Every moment and activity is a teaching opportunity. And I use that to the fullest advantage.
I guess I feel my daycare is more like a 'home away from home' and not meant to be a school. But each stage the child/ren go through I take it and run with it. When 3 of them were starting to show an interest in spelling their names, I went crazy with signs throughout the house.
Just because we don't use all the terms a preschool might, we are no less teachers than they are. We just offer it a bit more informally.