English today is the world's main language, and as such, it no longer belongs to any particular country. It is the language of multinational corporations and the entertainment industry, and the lingua franca of everyday communication. English is a new basic skill of the 21st century and a tool for integration into the world culture and international interaction. Simultaneously, every fifth inhabitant of the planet who speaks English brings something new to the language. Together with experts, we will try to figure out what it means to "be proficient in the language" in the reality of many world's Englishes? And how does contemporary teaching reflect the authentic English?