These schools are not diploma mills. They let just about anyone in but take your tuition (which is really, really high) for the first year and weed a lot of people out. If they were churning out very sub-par docs they would lose their accreditation , I would assume. I have heard that people who actually make it to graduation are decent docs; however, they still have an uphill battle b/c of the stigma. Also, if you plan to "slack off" during med school and somehow make it through, good luck on the USMLE step exams, which are the only thing that can place you anywhere near even-ground with US grads.