Students, do you know a great teacher? You can nominate your teacher to be an Astronaut Educator. Teachers, do you dream of an out-of-this-world classroom experience? You can apply for the Astronaut Educator program. NASA is looking for Educator Astronauts, with expertise in K-12 education, to help develop new ways to inspire the next generation of explorers. Educator Astronauts will be fully qualified members of NASA's Astronaut Corps, and will train as Mission Specialists.

http://edspace.nasa.gov/home.html