Hi tired English teacher - too bad I saw this post so long after you've posted it. Hope you've found that new career.
I've trained a lot of tired English teachers over the last 12 years who wanted to do something else with their superb teaching and communication skills. I found that they make great technical writers - you can use many of the same skills that you've learned as an English teacher - and the training period, at least in our program, is only about 5 months.
Best Regards,
Mati Schwarcz
Online Technical Writing Training
www.jaynecommunications.com