The book aids in preparing students for essay writing in the Panhellenic exams. By surpassing the instrumental use of language and commonplaces, which are usual errors in speech production, it provides feedback with ideas and arguments to youthful thought and skepticism, while simultaneously familiarizing students with the style of essay writing.

Per thematic unit, it includes:
- Developed topics with diagrammatic presentation, where all issues contained in the thematic units of the Expression-Essay school books for all three grades of high school are analyzed
- Reading texts with comprehension questions and exercises for their processing
- Review tests
- Answers to comprehension questions and text processing exercises, as well as those of the review tests