<p>Regarding Vossron’s ranking:
Unlike say, med schools, there’s a huge difference in the career prospects of someone graduating from a top PhD program (where admission is highly competitive) versus someone from a second-tier PhD program, and someone from a mediocre PhD program (where admission is often relatively easy). It’s therefore hard to interpret PhD program matriculation rates as anything other than a weak gauge of the proportion of students interested in pursuing PhDs.</p>