Deeaimond, actually the new principal does know me. We were hired at the same time, in 1999, both being quite above the experience and age for new hires in teaching (that's what I loved about my last employer. They hired by need, not by how much they had to pay). He just forgot that I was in grad school, doing something else.
I was in your position once. I got involuntarily transferred from the middle school to an elementary school. Since I was a special ed collaborative teacher, the new principal wisely decided to assign me to work with 4th and 2nd grade. She took one look at me and knew it was best not to put me with first graders. The second grade was a learning curve of about a semester, but it was actually OK.