[masraum]

Technically, IQ is independent of education/knowledge so you could have someone with a very high IQ that was poorly educated and therefore may not exhibit correct spelling, grammar, syntax.

What you're talking about, IMO, is education level and personal focus/retention.

I work with a guy that's very smart. I have to think that he's got an above average IQ. He's a coder with a lot of knowledge. He likes to "learn something new every day" and reads books to learn new things all of the time. He's single handedly written an application that gathers information from thousands of devices, analyzes the data, and predicts failures based on trends in the data (among other things). I think he's probably got an above avg IQ. He often has typos in his emails. I am confident that he knows how to spell, but he doesn't go back and fix some errors.