The recent migration flows have changed the linguistic balance in some European countries that are more exposed than others. Italy is among them. The Barcelona Agreement states basic rights for the promotion of all linguistic varieties, but language differences may represent a barrier to human promotion. Unfortunately, immigrant students in Italian schools accumulate delays in their career, even if they are of second generation (born in Italy), and this is due to hindering linguistic competences. Thus the teaching of Italian as a foreign language at school in such a situation of new multilingualism requires the activation of dynamic teaching techniques more oriented to communicative skills than to grammatical rigor.