I'm going to focus my evaluation project on the high school jazz ensemble.  I can easily post a recording of one of their recent live performances for them to listen to and evaluate.  In addition to that I will invite colleagues to listen to the recording and have them provide the group with some constructive criticism.  This can all be done in about a weeks time, maybe two.

Best case scenario I can think of for our performance groups is to be in a real-time feed back situation with an authority on the subject.  With Skype I can have my kids perform for anyone in the world and get immediate critique.  They would even have the opportunity to be coached by this person or group of people and walk away already showing growth.

Along the same lines I could expose the group to another ensemble performance anywhere in the world right from our own classroom.  It would really benefit them to have some kind of interaction with the group or their conductor and maybe share their own thoughts about the performance, perhaps through a follow up blog.

Skype and some sort of blog would be the communication tools.  This would probably work best with a colleague you feel comfortable planning with, but it would be interesting to learn the habits/expectations of music programs abroad.