I am preparing to pursue higher education and I was reading articles about schools. In one of the articles it was mentioned that the author attended a "high teens" ranked school. There was no mention of who ranked this school, how it was ranked, or why. I assume the idea was that I should be impressed by the implication that his school was ranked between 19-16 (my scale for "high" teens).
Who is ranking these schools and what does this number mean? How do I find out my schools ranking?