Michigan School Districts: We Have No Ineffective Teachers [Michigan Capitol Confidential]:
"The law requires annual ratings, but is murky on how to do it
Judging by the percentages, the state of Michigan didn’t have one ineffective teacher or administrator last year in the entire public school system, which covers 899 charter schools and conventional school districts.
That’s according to the cumulative reports filed by all the state’s public schools after the 2015-16 year.
The percentage of teachers and administrators who were given the lowest evaluation was so small that the state rounded it down to zero percent.
There were just 400 “ineffective” schoolteachers out of 94,164 in the state of Michigan in 2015-16, or fewer than one per school district.
That comes out to zero percent..."