Actually...there are some schools that are better than others. Sugar coating the situation doesn't do anyone any good. While there may not be "bad" medical schools (because they all have to get accredited), there is definitely a wide spectrum of quality.
It can be humbling to admit that COMP (or a State school, or TCOM or whatever) isn't as good a school as say, Harvard or Stanford. But that's the reality. Harvard and Stanford have world class facilities, teachers, research, and hospitals...not to mention big bucks. COMP may have some excellent features, but on the whole you cannot say that you will get the same education there as you would at a top school, and if you do you are lying to yourself and everyone else.
While that can be hard to swallow, it's much healthier than telling people that there is no hierarchy of medical education, because there really is.
Now, that doesn't mean you can't be an excellent doctor no matter where you went to school, because of course you can. But what you are doing when you say there are no good or bad medical schools is protecting your ego from being judged by the person who is asking the question. A better response might be to turn it around and ask them why they want to know if the school you are going to is "good" or not. Most people won't admit that they want to know where you stand in the hierarchy of Smart People, but that is essentially what they are asking.
Maybe at that point you could let them in on the secret that the vast majority of doctors in the world graduate from medical schools that are not in the top ten or twenty, but they do a fine job with their patients nonetheless.
