The Boston Public Schools Internet Safety Website contains resources and strategies for parents, teachers and students to use in order to help promote online safety. There are some great classroom posters here for download.
The folks at Common Sense Media in San Francisco created this video in partnership with Google [Feb 08]. You may find it elsewhere on YouTube but this is the original version and if you're showing it to a parent group at a school where YouTube is blocked, this is a better option. You can click on it and it will enlarge to full screen.
Looking for games online that might help students learn important cybersafety concepts? Add this collection from around the world to your digital citizenship training efforts.