So the AP was speaking to your class at the request of the ASL teacher, yes?
So the interpreter was required to sign everything the AP said, correct?
When you say that "she went on about how my teacher has a handicap", do you mean the AP was complaining about, or mocking, or insulting the teacher? Or was the AP being overly patronizing (intentionally or not) by saying that because the teacher was handicapped (her word) that the students should show more respect to the teacher? Or was the AP saying that regardless of the teacher's handicap (her word), the students should show respect to her? Or was the AP saying that even though the teacher had a handicap (her word), the ASL teacher should be respected the same as every other teacher at the school?
Most hearing people don't know about Deaf culture, that's true. We would hope that someone in the AP's position would be better educated about her teaching staff.
Maybe your teacher had a private talk with the AP after to explain how hurtful those words were? If so, I hope the AP apologizes and asks the teacher to help her learn more about Deaf culture.
