William Sanders was an agricultural statistician who developed a secret, patented formula for measuring teacher effectiveness. It’s call EVASS. It was tossed out by a Houston judge who said it was wrong to judge teachers by a secret algorithm that they could neither examine nor question.

As Stuart Egan reports, North Carolina clings to EVASS, no matter how many times it has been discredited (by scholars such as Audrey Amerein-Beardsley) or by courts that findit arbitrary and inscrutable.

Want to understand how teachers in North Carolina are evaluated?

Egan writes:

“Actually, the chain is from a .gov to a .org to a .com.”