With your interest in Technology for your high school students, I recommend you take a look at Wiziq's virtual classroom and authorstream's power point presentation platform. Both are web based platforms, have a bunch of features and free basic service.
Here’s a Public Class on Technology Integration you might be interested in.
Hope you're enjoying the winter break. I was wondering if you, your educator contacts or students would be interested in participating in a nationwide Vocab Video Contest @ MIT university. We'd really like to get more students involved from California!
You can view contest details at BrainyFlix.com Please let me know. Thanks!