The principal aim of this article is orientated towards analyzing the advantages and disadvantages that have the methods of the magisterial class and , That of analysis of cases for the development of the competition of the juridical communication in students of law , As well as also to establish the methodological differences between both didactic methods inside the academic space "Public international law", Orientated to the development of the competition before enunciated that consists of the aptitude to write, To interpret and to argue juridically, in agreement with the general information issued by the Icfes, in the modules designed on the occasion of pruebas Saber Pro 2012 It indicates five (5) basic competitions defined in the first stage of the design for an equipment of ten (10) professionals of the law with specialities and diverse experiences, From the powers of low of different regions of the country, five competitions to knowing: cognitive juridical, Juridical, ethical investigation and juridical responsibility, prevention and juridical intervention to the conflict, and juridical communication, the latter on which it centres on the work of investigation. It splits of the raised problem brings over of how there develops the competition of juridical communication across the magisterial class and the analysis of cases in the students of law with base in a methodological descriptive design there is realized a measurement of the experience of application of both didactic methods by means of surveys of perception and evaluation, In order to evaluate which is the level of acceptance of each one of themethods realizing an approximation to the acceptance of each one of them in agreement with the achievements reached in the competition of the juridical communication. The results show high acceptance of both methods as for factors of motivation and general learning, but the method of cases is correlated by a positive perception as for scope of the looked competitions