o, if you set up Google Apps: Education Edition, collect parent consent for students to use it, and control the student accounts yourselves, you’re in good shape with respect to COPPA.
This is an amazing slideshow with great ideas to start getting some ideas for integrating tech into your classroom. Remember: it's about the learning, not the tool.
I think this would be a really good idea for our parents. Maybe not this year, but if we get into Google Docs, etc., it would be a good idea to do an overview for parents.
I think this is a great idea, and speaking with friends who are parents, I think it would be well received. Personally, I'd like to become just a little more familiar with all of these items before setting something like this up. Definitely a future idea.