Illiteracy in the US

11 Million Adults Illiterate, Study Shows. Of course, the very first phrase explains it a bit: An estimated in one in 20 U.S. adults is not literate in English. Still, this is inconvenient. And so, many signs, manuals etc I see here are now written in at least two languages, English and Spanish. A large portion of government documents (all levels of government) are also published in several languages. (In some states one can even choose to take an oral driving exam in Russian or Vietnamese!) So I wonder if the level of functional illiteracy has not been overestimated.

Another funny quote: Adult literacy dropped or was flat across every level of education, from people with graduate degrees to those who dropped out of high school. I wonder about the illiteracy rate among the people with graduate degrees.