In writing the guidelines, we tested a lot of techniques. We can polish and use these. Difficult to find online commercial sites that meet the guidelines. Not so much at software developers. Little for users.
Students get a sense of Web larger than what they're used to.
I designed a site at the Dept. of Labor. They will be Level AA conformant soon. If there were some extra warning, that would help. Need to be able to put on calendar in advance. Quantity of W3C material being sent out makes it difficult to select.