If you'd like to be added to the Adult Student E-mail list, send an e-mail to email@example.com and include "adult ballet - add me" in the subject line.
The e-mail lists allow teachers to notify students about schedule changes, class cancellations, special offers, etc. The lists are managed using googlegroups. The lists are private and only the listowner/manager can see members.
For classes taught by other instructors, ask your instructor if he/she has an email notification list.