The article is devoted to dramas performed at the school in Leszno in the 17th century, especially in the 1640s and 1650s – that is, during the rectorate of Šebestián Macer of Letošice. According to surviving sources, the number of plays produced then, in comparison with the preceding era when Comenius was rector, definitely did not decrease. The tendencies established by Comenius's play Diogenes of 1640 continued in the next period. In the Macer era, first, a number of secular elements (e.g. in the play Hercules monstrorum domitor) were introduced in plays performed on the Leszno stage; secondly, at that time too, factual teaching material was adapted into a play (Macer's dramatisation of Comenius's Janua). That was in harmony with the practice of a number of Polish and Silesian schools at the time, which presented actus oratorii, in principal composed rhetorical productions that in some cases adapted the teaching material.