Hi Mathieu, here are 2 from 2009 -
University of North Carolina, Charlotte:
Final 2009 Report of the University of NorthCarolina LMS Evaluation Committee
UNCC - Assessment Team from 10 NorthCarolina Community Colleges
Open Source Collaborative: Moodle Assessment Report
Also, several of the officers of US and Canadian Moodle partner, Remote-Learner - have seen conversions from the academic staff side -for instance Jason Cole at San Francisco State U., and myself at Cal State, Humboldt & have assisted with many since.Best of luck, Michael.