To be honest, it surprises me that 9% of JWs have completed a college degree. I would have thought it to be much lower. I'd be curious to see how this breaks down for JWs in rural vs urban areas, as well as different regions of the US. In rural areas (and probably Spanish congregations too), the college degree attainment for JWs has got to be somewhere between 1% and 2% - just my guess though.
Of course, it's possible that some of the JW respondents assumed that reading an Asleep! magazine qualified as equal to a college degree, and that reading Asleep! for two consecutive issues was the equivalent of a Master's Degree.
I wouldn't be surprised to see Tight Pants Tony somehow incorporate these statistics into his Annual Meeting talk, saying they should be proud of being the least educated people in the world, while also touting themselves as the "thinkingest people in the world."