There seems to be a double standard here depending on the country. I can speak for the US specifically, because here is where I grew up. To varying degrees, higher education is frowned upon. I was a good teenage JW, who told the counselor (much to her chagrin), that I was not going to go to college. I was doing the right thing.
Now I have friends in the UK and Sweden. They went to University no problem. No real issue. It was almost expected. Could it be because university in these places is paid for by the state, sort of like k-12 here in the US?
That is really the only reason for it that i can come up with.