Facing the growing interest in the Polish language, PNTA has been organizing intensive two-week-long courses in the Polish language and culture since February 1997. They are mainly designed for students, but more and more frequently they are attended by professionals or retired people. The courses are co-organized by PROLOG Language School in Cracow. They take place twice a year during the winter and summer semester breaks at German universities (February-April and August-October).