Barbara Buntrock is a professor of viola at the Robert Schumann Hochschule Dusseldorf (http://www.rsh-duesseldorf.de/en/home/).
Information about the study application and requirements can be found on the website of the school.
Upcoming masterclasses 2018:
July 4-15 in Uelzen (Germany), 9. Internationale Sommerakademie
August 25-September 02 in Horn (Austria), Allegro Vivo