How Jung Principle psychological function relates to your antatomy makeup. nMBTI is designed to measure humar behavior.
I believe using a self assesment prior to starting a new class, will help the instructor to get to know their students. I think it would be beneficial for the instructor to share their results with the new class as well. Understanding the personality of someone, helps you to understand each other better.
I have also learned that you can have a combination of the personality traits which causes much anxiety within yourself.
Learning about the different personality traits like Phlegmatic allows you not to judge or label a student but more understand how their personality affects their studies. Knowing this you can best serve your students.