me and a couple friends of mine did a presentation at my church for the kids with reptiles including a large snake and several snakes and a couple Ts. This took place on a wednesday night when we have regular church service. I told my pastor that some of the congergation might not be happy with the fact that there will be snakes in the church. He told me he didn't care and he would just let the people know that it is happening and if they choose not to attend then they didn't have to...
I hope you are able to bring you snake into class to show what a wonderful animal they are. Good luck!!!