Protestant education system and its influence on Polish language in Cieszyn Silesia at the turn of the eighteenth century

The article presents the part of the research material based on Silesian language from the Cieszyn area. The author analyses works written by Cieszyn protestant secondary grammar school students which have preserved in archives of Tschammer´s Library. The manuscripts which were studied date back to turn of the eighteenth century. The research proved that spoken language in Cieszyn differ from the common Polish language of that time in every level of language