I'm a little confused about this all. I've been looking at some preschools near us that start at 2.9 years, which is what M will be next Sept, and most of them offer half-day and full-day programs, but is preschool supposed to be used as a "childcare" method or is it just supposed to be a few days per week/a few hours per day type thing?

If you WOH, what age did you send LO to preschool, if at all? Did you do full days or half days and how did it work logistically?