Off campus depends on where you live you could always found more on website. I had some experience with over a dozen of day care centers for my dissertation. I would recommend avoiding the small family day care and choose places with rigorous guidelines and management.
Montessori is also a good choice for children over 3.
Couple came to mind: Our children's Center, (Monterssori)
ABC family center,
Great Lutheren preschool (downtown)
I left State College couple years ago not sure what the new ones are. I heard they have a Chinese School too now. Maybe you could talk to Moms there and got more info.
Good Luck