Hi Steven:
Good summary. Part of our job is to plan in order to assure students learn whatever course objectives are given. Pretesting can be a help to both student and teachers. For students, they get a preview of what's ahead in the course, and maybe they can begin to prepare if needed. For teachers, we see where we may need to tweak our plans to target areas that we find may need more emphasis than we had planned.
Regards, Barry