Geekety geek geek geek.
The anal-retentive English teacher who lives in my forebrain is still in fine form, I see:
English Genius
You scored 100% Beginner, 100% Intermediate, 93% Advanced, and 83% Expert!
You did so extremely well, even I can't find a word to describe your excellence! You have the uncommon intelligence necessary to understand things that most people don't. You have an extensive vocabulary, and you're not afraid to use it properly! Way to go!
You too can try The Commonly Confused Words Test; if you're like me, you'll probably find yourself thinking, "That's a change in progress! I'm going to get this wrong, but in 20 more years I bet this'll be common usage!" Usually my inner linguist can shut up during grammar tests; her domain is spoken language, not the written stuff. Oh geez.
And those of you who are language nerds enough to have read this far might be interested in The Eggcorn Database, which takes the "commonly confused words" idea and runs with it in a way that I find truly wonderful.