TEDxRedmond is an independently organized speaking conference that follows the basic structure of a normal TED conference -- except for the fact that all its speakers are all children in grades 6 - 10. If you're familiar with the TED series, TEDxRedmond is a branch of it. If you're not as familiar with TED, you can visit their official site at http://www.ted.com/.
Here are the official details for TEDxRedmond:
September 18, 2010
Redmond, WA 98052
You can sign up to attend TEDxRedmond at http://www.tedxredmond.com/ (click the "Attend" button). You can also sign up to speak there by clicking on the "Attend" button and filling out the form at that link, but all speakers will be students in grades 6 - 10.
If you're in the Seattle-Redmond area, be sure to come! It will be a lot of fun, and there's going to be entertainment (and food, I believe) as well.