translate English to French: As opposed to special forms of training which are mandatory, Military Grammar School, in the four-year cycle, offers to its pupils around twenty different optional courses and trainings, while pupils, depending on their interests, choose which one they would attend.
Outre les enseignements spécialisés qui sont obligatoires, le lycée militaire offre aux élèves, au cours du cycle de quatre ans, une vingtaine de formations et cours facultatifs différents, parmi lesquels les élèves peuvent choisir ceux qui les intéressent.