Art training may be a great option for a professional that has the skills needed to teach students as well as a solid background in the field. In addition many colleges and community centers are willing to offer weekend or evening non-credit opportunities for those that would just like to share their knowledge.
Art training is often available at many schools, but that doesn't mean that you should go to any school that is available. Instead, consider the range of what is offered and the specialties in the art program are important. A school that's mainly art based is a better option for many students.