This might be the educator in me, but:
You’d better come up with a way of evaluating your work because everyone else around you already has.
Evaluation requires a purpose, vision, or some standard. This will also require you to gear your work towards a purpose, vision, or standard. Are you teaching to the test? In a sense, but really you are teaching/working toward the desired result.
Education. Ministry. Marketing. Church. They can learn so much from each other…