I wore a nice pants suit and I did take a portfolio of my work. It wasn't
black.
Basically, you need to look professional. No purple hair or weird outfits. Of
course, it would depend on the district you are applying to. The city where I
work is pretty conservative and expect their teachers to look and act
professional. Since I hadn't taughtin the public classroom before, I took
some of my own work. If you have examples of student work, that would be
good to show also. Good luck! Janet