A reader for the Serbian Language and Literature is a textbook of a specific structure which consists of literary texts (aesthetic messages) and texts of the didactic-methodical apparatus, ie. their interpretations (pragmatic messages) which the author/authors of the readers give to the aesthetic messages. The reader is insufficiently explored and very influential printed mass media whose messages are formed in the communication center by a group of professional communicators. Its power is in the connotation of aesthetic messages which, in addition to education, contribute to upbringing, socialization, strengthening of the ruling cultural pattern and ideology. The communication situation of this media is unusual. The author/authors of the readers are in the dual role of communication subjects; they are the emitters of pragmatic messages and recipients of aesthetic messages because pragmatic messages are, in fact, recorded meanings which aesthetic messages have for the authors. Due to the changes in the social context, the need for education, teaching programs, expressive attributes of the media, the authors and their reference frames, the editions of the readers are changing, too. However, there is a corpus of literary works that all the editions of readers for a certain age contain; these literary works (aesthetic messages) are unchangeable, but pragmatic messages that interpret their meanings change. It is impossible to figure out which meanings for the audience aesthetic messages in the readers have, but there is no doubt that the meanings of aesthetic messages which are reached and recorded (pragmatic messages) by the authors of the readers influence the meanings of the final recipients whether they (partially) adopt them or (partially or completely) reject them.