When the undergraduate programs drop out of the Rankings, I’ll believe that these universities are serious. There are no lack of applicants for any medical school out there, and medical schools at universities such as WashU are rejecting the huge majority of their applicants. They don’t need a high rank in the lists of USNews to get five times as many high quality applicants as they can accept.
For medical schools to drop out of USNews rankings costs nothing to the medical school.
Moreover, I do not think that any of the top applicants for these medical schools are choosing their medical school based on USNews rankings. There are 154 medical schools and almost every med school applicant who is ultimately successful is familiar enough with enough of these schools to know which is best for them, and even which are the most prestigious.
Truth is that any applicant who is using USNews to choose a medical school is already ten steps behind the applicants who are ultimately successful.