Assessing the Professors

This TechCrunch article has its flaws, but it prompts an interesting question: 

If we were able to devise an assessment of the quality of a university professor's teaching, what would that assessment look like?

I know we'd mess it up if we designed the measures in today's political atmosphere - one that stresses a very limited version of job-readiness. 

But what if we scholars were able to devise their own assessment system for how well we teach?

Side note:

I followed the link to this TechCrunch article, because its title suggests the existence of a labor union for professors.

That seemed unlikely.

Turns out that the author mislabeled the American Association of University Professors, which is a professional association. There is a union component called the AAUP-CBC, but that is not the group that issued the statement on performance based funding.