If you’ve been trained in teaching skills then you should that teaching, just like any other acquired skill, has a fair amount of value. The skills can be used in a variety of ways and circumstances, and you certainly aren’t just limited to working in an educational system for your entire career. Besides working in a classroom, you can also work as a private teacher and tutor, so if you’ve tired of the way things work in schools, these could be a viable options for you.
Private tutoring has a lot of opportunities besides one to one training with students studying for an exam; you can also work as a teacher for adults in vocational classes. These opportunities mean that you can easily fill up your time with tutoring; transforming what is typically a part time job into a full time occupation. If you build up your reputation enough, the amount of money you can charge will also increase considerably.