I gained a three year teaching PERMIT that put me in the classroom while working on certification. My course was titled "Embedded Computing", and mine was the only one in Georgia at the time. I had a wonderful time with my students, and most were starved for a class that had some content. In three years I had seven students tell me that I provided them with a clear career path and plans for higher learning. Many told me that my class was their favorite in all of high school. I had no discipline problems whatsoever.
At my age I do not want to go back to school for a teaching certificate; therefore, I left the system once the permit expired.
I sometimes think that I should have retired earlier from industry in order to teach. The school was very happy with me and allowed me to go beyond course standards as I pleased. They also bought anything I wanted. In short, the school and the students were indeed hungry for a teacher who could handle such a class.
Well, competent teachers among the sea of union water treaders is a hot commodity I would imagine.