Well, you could argue that some "IQ segregation" already happens, by virtue of having highly selective private schools, advanced placement, etc. I think the st

Well, you could argue that some "IQ segregation" already happens, by virtue of having highly selective private schools, advanced placement, etc. I think the students (or parents when they're too young) should have choice though, and be able to choose how challenging they want their education to be. With high-priced private schools, this is not really the case though.