L'Ecole de la Tour (literally "The School of the Tower" in French) called the Tower by its students, was an elite boarding school run by The Merovingian's organization.
Exile's children (who were given over to the Merovingian at Mobil Avenue by their parents to be sent to the Matrix rather than allow their code to be deleted in The Source) were schooled in academics, culture, business and combat at the Tower. Graduates of the school often went on to become the Merovingian's most effective and trusted operatives; valuable assets to his organization.