Which D.O. schools have structured and pre-planned 3rd/4th year rotations?

I understand that some Osteopathic schools make you go to other hospitals in different parts of the country and pretty much search for your own rotations. I understand that many (or all?) M.D. schools have their own hospital and let you do rotations there. Which D.O. schools are like this? Which schools have structured rotations (maybe around their own hospital) so you are not left to fend for yourself and to search/ask other sites and hope they accept your rotation? I'd imagine they are few?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums