On a totally unrelated note, they landed on the comet! The Philae lander touched down on it today. Granted, this has nothing whatsoever to do with the Lunch Notes, but it was so groundbreaking I felt I couldn't let it go unremarked. Can't wait to see what it finds out!
I originally meant for the gecko teacher to be a turtle, so I could call him the Turtle Tutor. Then I realized - ninjas and turtles. As much as I like TMNT, I didn't want to inadvertently link into them. So I changed it to the Gila Master, which I ended up liking better.