GB was founded on a passion for communication
Our inspiration is The Callan Method – which helps in this communication between millions of people.


Since 2014 – GB is among three elite schools in Poland and the only school in Warsaw with the accreditation of The Callan Method Organization.


Since 2008 we have closely co-operated with The Callan School of English in London and The Callan Method Organization in Cambridge.

Many recognizable international companies have trusted us:

Among the world – many big and reputable companies laid their trust in The Callan Method