This is not too common in theatres in the West. This was Stanislavsky's dream, as it was Grotovsky's. I assure you that it was the dream of many interesting theatre people of the 20th Century to unite school and theatre. School was to be in the theatre. It is the perfect mediator between actor and director.
Actors are more open with teachers.
In the class situation actors have the opportunity to make mistakes. They don't have this opportunity on the stage. There shouldn't be any border between theatre and school, school and theatre, teacher and director, rehearsal and performance. If we can succeed in uniting these things, I am sure that this will change the face of theatre in the 21st Century.