This site is maintained by a high school biology teacher. It includes notes / study guides, interactive quizzes, online activities, and numerous science links relating to all biology topics.
This website contains publications made through the NABT on new and innovative lesson plans. It would be useful to teachers wishing to educate on biology to help them in coming up with a lesson plan onhow to teach a particular topic.
This website provides news articles about primarily biology topics but the topics are pretty advanced so this information is most pertinent to high school students.
This website provides a great number of really interesting articles about biology that could easily be incorporated into the classroom and inspire students to investigate further.
A neat live underwater audio stream from under the antarctic sea ice. Includes links to research papers and explanations of how the data is being used. See if you hear any whales!
This site has various resources for elementary, middle and high school grades. Something especially interesting is the free video series titled "Women Are Scientists."