I think 'worthless' is too strong a statement. The rankings are a subjective score, but it does correlate to some measure of merit. A school ranked in the top-2

I think 'worthless' is too strong a statement. The rankings are a subjective score, but it does correlate to some measure of merit. A school ranked in the top-20, will probably be a 'better' school than one ranked in the bottom-20 spots. For undergrad, the reality is that you can get a good(enough) education from almost any accredited university in the country. For degrees fields like CS, or Engineering, it almost doesn't matter. You will get a quality education from most institutions.