We were doing the same thing 20 years ago by looking at students verbal and math scores on the ASVAB.
"Study backs 'value-added' analysis of teacher effectiveness
Classroom effectiveness can be reliably estimated by gauging students' progress on standardized tests, Gates foundation study shows. Results come amid a national effort to reform teacher evaluations."
So, we now know that Scruffy is a teacher.
Consider: Scruffy tells us nothing. He only challenges. Asks questions.
Now consider this: teachers must know more than the students. They should instruct and give these facts to the students. Scruffy cannot demonstrate that he knows more than the students or can give them facts.
