Suzi Erpestad, 4, leans on a tree while taking a break from playing at Hartley Nature Preschool on Tuesday ... in every kind of weather.” Elise Tshilumba, 4, crawls out from under a tree ...

Can you imagine a preschool with no walls or technology ... "We like to say that there's no such thing as bad weather, there's only bad clothing," Kellie Morrill, executive director of Tiny ...