Welcome to A to Z, gaylestuff!
Good things (may) come to those who stop lurking: with some rummaging I found http://www.gapsc.com/Rules/Current/C...505-2-.025.pdf
. If I read this correctly, and if I infer correctly that you're already teaching elementary, I THINK you'd come under Section 2, which looks like it specifies the exam plus possibly some other requirements. (I didn't click the link for the additional requirements.) Let me add that it's fairly common that states require an additional pedagogy course for teachers transitioning from elementary to secondary or vice versa and from general ed to special ed - and, frankly, it's probably appropriate, given the differences in pedagogy.
Hope this helps.