I think that if you'd like to take a few hours of classes you could get a Masters in one of the related fields. I know that is more education but it is a step up and not a totally different side step.
As you said there are many fields out there and you have a wonderful opportunity to select a new area with your head on straight. You know the intricacies that would be involved in a different field.
My FIL has a BS in Education and he got his Masters in Special Ed. He taught at the elementary school on the Julliard Campus for a while then he taught at the Kentucky School for the Deaf. He had a wonderful career after retiring from the Navy.
I think you have enough knowledge about what you are interested in to make some good choices. If you truly don't want to be in the classroom anymore and have that kind of life then by all means, make a change. You can always choose something new and different too but do expect to spend just as much time in the classroom as you did before on the core classes.
If you already have a degree they don't require you to take other core classes over sometimes, if it is within the same college. For instance, if your BA/BS is from the College of Education you have the options within that College to choose from and may only have to take the main classes for any other major with in their scope.
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This is what OSU in Stillwater Oklahoma says about heir College of Education fields of study:
"COE Academic Units:
The College of Education offers 29 program areas that range from athletic training to teacher education. Our program areas are housed within three academic units including the School of Applied Health & Educational Psychology, the School of Teaching and Curriculum Leadership and the School of educational studies."
http://education.okstate.edu/academic-units
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This is the graduate programs they offer in that College:
http://education.okstate.edu/graduate-studies
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You are fortunate that you have options at this point in your life. I hope you will consider all the paths available to you.
My friend did her Masters degree in one summer and one fall semester. She is a vice principle now and loves it.
Another friend teaches at 2 different schools in country towns who can't afford to hire teachers full time. She makes more money and has more flexibility that if she was in just one classroom every day.
Another friend got certified to be a superintendent and is loving his job. He is able to do so much more.