[socksy]

That's interesting, I don't think it makes one seem anymore uneducated than any other piece of correctly used grammar (correct use of the word "one", "none of them is" etc). I wouldn't regard my self as uneducated, having had the privelege to go to a good (if not public/private) school.

By any chance is this one of those quirks of American grammar usage that I've not come across before. The only times where I've seen disapproval of the use of 'they' in that fashion was on the Internet... By any chance is this another Ame

[pak]

"They is so smart!" --> the apparent subject-verb disagreement is just too unfamiliar to most ears.

[socksy]

You are still supposed to use plural declensions despite talking about a single person.

For instance: "if such a person existed, they were very quiet about their existence". Note that it's not "they was", which is grammatically incorrect.

[elblanco]

That's because it should read, "they are so smart".