You sound just like me!
I was in your same situation, and I chose an MSN in Education program. The school is/was close to work, was in the evening and was an accelerated full time program.
The program prepares you to teach in academia, staff development, or as a CNS if you desire. Whatever option you chose, you will be prepared to work in any of those areas.
I may not even teach once I graduate, and may be doing something different altogether....and what I've found is a Master's with ANY focus is valuable. Unless a Master's is a practitioner program, most have the same theme such as philosophies, theories, etc. and adequately prepare you for any Master's level jobs.
Good luck in whatever you decide.
If you're interested in more about where I work and what I plan to do with my degree, see the thread "Need Career Advice