Here's an interesting development. I had never heard of this test before. It's a test, not of English, but a test of "a teacher's knowledge of skills and methods needed to be a successful teacher."
First, I'm glad to see that someone has qualified and quantified this for us. I'm sure all those researchers out there working on exactly what makes a good teacher will be happy to know that there is now a test for it. Action researchers need research no more.
It is also "not a test of English." Except that I guess that it is delivered in English rather than say Japanese. If that is the case, then it is indeed a test of English, and it is a test of ESP (English for Special Purposes), because it will use the teaching vernacular.
My prediction is that some schools will see this as a way to insure that they will get "good teachers." They will only hire or retain teachers who score highly. And then as time passes, they will find that test scores and teacher performance are not as closely related as they imagined/hoped and they will wait until the next bit of testing wizardry comes along.
gauge skills of English teachers