American High School Theatre Festival - Fringe Festival - Edinburgh, Scotland 

Here's a couple links that cite that Davidson was invited and attended the AHSTF and a link to Davidson's application videos for two of the years they were invited. Unfortunately, again, the previous trips don't have a web presence due to the lack of online documentation.
 http://www.edfringe.com/shows/detail.php?action=shows&id;=5492
 http://www.ahstf.com/AHSTF/2007festivalschedule/GS_BS_2007.pdf
 http://www.youtube.com/watch?v=il6Ix0_5AEI
 http://www.youtube.com/watch?v=qqrY5LmEuOQ