How to assess the quality of school's rotations before you attend?

Searched but could not find. When looking at DO schools, how can you tell if they have good rotation sites? All I know is Wards=Good, Preceptor=Bad, and as far as I know, schools that send you to hospitals for rotations are wards based? Please correct me. So how can a school have 20-30 hospitals that they send students to, all within 30 miles, and still have "bad rotations?"
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums