Tricia, Dan's given you some excellent resources. Here are two other reports that provide valuable information on larger institutional changeover to Moodle.
Selection Committee Report - UNC Charlotte
Pilot/Assessment Study - North Carolina Community College System
Your organization may also want to attend the MoodleMoot Orlando event held concurrent with the annual Sloan-C ALN Conference on October 29-30. There is a track and keynote dedicated to your topic of interest.