I agree with a lot of what you said... especially with regards to newer schools. But... as someone going through the application process now, I find it challenging to learn about a school's specific clinical education. Especially when considering a school on the other side of the country and you're not familiar with any of their affiliated hospital systems.
During interviews, you only meet 1st/2nd year students who have never stepped foot on a rotation site. While they might say their school has good rotation sites... they literally have no idea. Some of the 2nd year students I met at certain schools didn't even know their selection process. If you ask the administration at a school, of course, they are going to be biased and tell you that their clinical sites are "strong" and provide students with the necessary tools. It's tough to get a good feel on things from a clinical perspective... and I wish schools/students/etc. were more transparent.
To my understanding, rotation sites that provide a mixture of residency-based and preceptor-based models are genuinely better... as are rotation sites that allow their students to see a wide arrange of medical conditions. What else should I be looking for?
This might be a silly question... but how can pre-meds/current applicants better evaluate a program's clinical education (for new AND old DO schools)?