At the school where I student taught, the new teachers got all low track classes while the experienced teachers got all the regular and honors/AP track classes. This is the case in a few other schools where I interviewed as well. Fortunately in the school where I will be working next year, the new teachers get all regular track classes and the experienced teachers get the honors/AP, but they also get the low track classes. I find this much more balanced and fair especially as it doesn't make sense to give the kids who need the most help the newest teachers. In any event, how are classes assigned in your school? How much input do you have?