Here is an interesting article on how to stay current in the field of Educational Technology. According to the author, the key is "software", staying up on the latest advances in software.
The UN has started a free online university with the first two degrees being business administration and informational technology, (which is close to educational technology, I would say). They chose these two because they felt they were the two most useful degrees in the world.
I teach in a high school dropout recovery program for Los Angeles Unified School District in Torrance. I do not teach in a traditional teacher-directed classroom. The only time requirement of the program is that the student comes in to meet with me once a week.