Moore Public Schools graciously produced the following video which explains the inherent inequities between the Value Added Model and Student Learning Objective teacher evaluations frameworks.
Moore also presented this information to the Oklahoma TLE Commission:
Since I teach two sections of 7th grade literature, I part of my evaluation will be based on VAM, so I do not have to put together an SLO. However, my effectiveness will be determined by less than 30 percent of the students in my classes.