Are teachers exploited?

[Antonio Balmer]

with the topic of exploitation, it makes perfect sense to me with wage workers.
The surplus value they produce for the employer is the value they create with their labor minus the cost of their labor-power.
But how does this apply to teachers who work for their school districts? Like high school teachers?
Obviously they need an organization to protect their contract and protect their rights from the school district, but how can we point out their exploitation? How can we measure the value of their labor and show that it is worth more than the salaries they receive?
Thank you. I am writing an article for my high school paper about out local teacher's union.

Antonio
Oroville branch, WIL

[JJM 777]

Whether a worker is "exploited" or not, should be estimated by comparing his full-time salary to the average salary of all full-time workers. (In the simplified but not completely honest version: compare to the average salary in your own country only. In the global equality version: compare to the average salary of all workers in the world, possibly with some local cost-of-living adjustments.)

Any work is usually expected to be worth much more than the worker receives as salary, because the work must produce also:
- payment for the rent of working rooms and equipment
- taxes to the state, for maintaining the society and helping people who are outside of the work force for any reason
- often also pre-payments for the pension of the worker when he will reach old age
- payment to the leadership of the worker (including the entire work hierarchy, all the way to the highest top leader)
- compensation for the years that the worker spent studying for the profession
- and yep in Capitalism: payment to the owners of the company

[Christopher Hill]

In truth I believe that all people are at this time being exploited, regardless of their wealth, is it not true that the heart strings even of the rich are being pulled by the evil representation of labor known as currency? I find that teachers are in many ways being exploited, but the base of this exploitation is with the students who are although unconcious of the fact being used for profit. As we all know the very system of education in the USA is a industry under the shadow of capital, and the people involved in this industry, as in every other industry subject to Capitalism can expect little but exploitation. Although the labor of a teacher is not shown directly in a product, it is as surely as any other form of labor being unjustly "obtained", all people have the right to education, but the educators in turn have the right to a living pay. Although I have no doubt as to the fact of their exploitation, I am with you in not knowing of a quantitive way of measuring their labor.. but perhaps one of qualitive value? For it is obvious that the enrichment of the mind is priceless.