The presented article deals with the development of key competencies of students preparing in the study field of reception technician. It describes key competences, the possibilities of developing key competencies and the development of key competences of primary and secondary school students. The article draws attention to the development of key competencies through a professional didactic text focused on the management of the work of a reception technician in a car service and selected options for evaluating professional texts. Expert evaluation methods, according to Turek (2010), were chosen for the evaluation of the professional text. In this part, we focused on the evaluation of features such as content correctness, compliance with the curriculum, clarity of expression and transparency, connection of theory with practice, simplicity, appropriateness and interest, the content side of the curriculum, arrangement of the curriculum into a system, inter-subject relationships, and clarity.
 The results showed that all experts evaluated the features of the professional text on the rating scale 0, +1 and +2. They did not use the ratings -1 and -2. The experts were in the Czech Republic and Slovakia.
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