It's called:
www.chompchomp.comI've met a disturbingly high number of English teachers in this country who are, shall we say, somewhat grammatically challenged...
I have a degree in English, and I've tutored students for many years, but I still find myself struggling with common mistakes from time to time. This is an excellent site for all instructors of the English language, whether you have a background in language arts, or simply take advantage of the fact that you get paid to " speak-a da engrish."
Please, please, please- I implore you to check out the site and take a quiz or browse the lessons for a few minutes each day. It is quite painful to read through forum posts from English teachers in which virtually every sentence requires heavy editing.
Practicing grammar frequently will also help you teach English more efficiently, and with more confidence. I practices the grammar every day and look how much good I write!