S.H.
OMG
You poor Mom. What a problem huh?
Try calling some 24 emergency pet Doc or shelter.
Maybe they will know???
Get another container for the other snake.
Doesn't have to be a 'tank'... just another container.
Maybe a plastic bin???
Do you know how to get a hold of the Teacher???
I mean, I wouldn't get rid of the snake, without telling him/her?
Try calling the school, have them forward your message to the Teacher and say it is an emergency!
And tell them it is about his/her classroom snake...
Here is a link for you: (for Herp Doctors in New York)-
http://www.herpvetconnection.com/newyork.shtml