'Not sure what you mean by 'licensure is not easy to obtain', but I would point out that it's not easy to obtain in any of the already established professional fields."

I was referring to how certifying teachers differs from state to state. It's relatively easy in some states to obtain licensure to teach. Those states pay less.

Another poster had referred to various ways the word 'professional' is used. It is used in terms of professional conduct, that's why I was referring to scrutiny. Ie: As a professional, teachers are subject to more scrutiny than a warehouse worker.

Again, the term is used in various ways. I often hear/read it used as the opposite of blue collar, similar to the way 'white collar' is used. It isn't necessarily how I use it.

You might not see any real reason to dispute that, but someone here posted that they didn't think teachers were professional, without saying why they would claim that.