IF you want to assess the clinical strength of a school, observe and ask a few things on your tour. Do not read a post on SDN about it....
1) Observe: Are the clinics nice? Renovated? Would you want to be a patient there, need be?
Agreed. Pre-clinic can be in a cave for all I care, as long as the main clinic, where I'll be seeing patients, is fully equipped, well-staffed, etc.
2) Ask: Do the students enjoy/benefit from using the technology? (Not: Does the technology look nice and shiny. That's a recruiting tool)
Agreed. At one school, the dean told our group not to pick their school based on their new, shiny toys. Don't be fooled by the glitz and glamour of their school or any school, because it doesn't matter if you're doing a class II prep with the latest handpiece vs. a 5-year old hand piece...chances are you won't be able to afford the new stuff for your own practice, anyway. Don't choose it for the new mannequin heads - you're going to struggle transitioning with real-patients, anyway. Instead, pick them for their teaching philosophies, clinical opportunities, faculty mentors, research opportunities, etc. Things that will actually make a difference to your understanding of dentistry.
3) Observe: Are the clinics well-stocked with patients? Is the waiting room: empty, full, over-crowded? Ask: Is this a normal day? Observe: Are the students in the clinics busy, or sitting in the hygiene chair with their study books open?
4) Ask: What is the patient disappointment rate? Is there a patient screening process? Are there financial counselors to assist with billing?
5) Ask: Will I see enough different types of cases here? Will I be well-trained (relatively) when I graduate?
Tangential issues: (In my opinion they are tangential and you shouldn't worry about them now, they may be huge considerations for you.)
1) Would you have to recruit your own patients, are are there faculty that will assign them to you?
2) Will the post-grad clinics be taking cases from you?
3) If my patient refuses to pay, would I have to for them?
4) Are the patients nice or thankful?
For all these smaller issues, just assume the best, or at least that it will work for your education, unless there is a salient problem. For example, every school with post-grad clinics of course is going to take some cases. They aren't going to let their advanced programs die at your feet because you want a better comp care regiment.