K.,
My kids both went to Preschool Project Kids, which is part of the Burnsville School District. They do child care & preschool, were open 11.5 hours a day, and I love them. When we moved to Rosemount, I called the Director of Community Ed for 196 to see if they had anything. They have a few different programs, but not anything like Preschool Project Kids.
There is a preschool that is located in Highland Elementary & Deerwood Elementary (I believe) called Country Garden Nursery School. It's good. They have 2-3 hour classes, 2 or 3 times a week, but if you need all day, it doesn't help. They have a summer bridge program for kids entering kindergarten who had no preschool experience, but that wasn't what I needed either. Once your child is enrolled all day in one of the elementary schools, most, if not all, have a before & after school program run by the YMCA that is located at each school. Again, no help for people in the district with preschoolers.
I was very frustrated that such a large and progressive district that has been around so long did not have exactly what you are talking about. I would have used it and I think a lot of people would. Maybe if the Director of Community Ed or the Superintendent hears from enough people, they will make it happen. Please let us know if you find out anything more.
T.