Typically, preschools begin readying toddlers for kindergarten.
While day cares may cater to all ages of children, from newborns to after school elementary care, preschools usually focus on toddlers up to kindergarten age.
Some preschools actually have kindergartens, too.
Parents that choose preschools don't always place their child in one as a day care situation.
Finally, some preschools adopt a particular philosophy, and these philosophies can be identified by the preschool name.