That's interesting because in most rankings I've seen of US CS programs Caltech's comes in around 5-10 from the top.
Which ones rank above Caltech depends on the particular organization doing the rankings, but schools that in at least some well known lists place above Caltech in CS include CMU, MIT, Stanford, Berkeley, Cornell, U of Illinois at Urbana-Champaign, Georgia Tech, U of Washington, Princeton, UT Austin, Harvey Mudd, Harvard, UCLA.
That a CS program is the best investment monetarily is not surprising, but I would have expected it to one of the higher ranked programs from a school better known for CS.