Ciao, Professore! (; original title: "lang", which is a grammatically erroneous phrase meaning "Let's hope that I scrape by (the Judgement Day)" taken from Raffaele's homework essay) is a 1992 Italian "fish out of water" comedy film about an elementary school teacher from northern Italy who is sent by mistake to an impoverished town in the Naples region of southern Italy. There he must deal with vast cultural differences and teach chronically truant children who only respect violence and power, especially one young boy who is already caught up in the gangster lifestyle. The film was directed by Lina Wertmüller and stars Paolo Villaggio.

Plot

Marco Tullio Sperelli is a professor of Italian language for children from the region of Liguria in northern Italy. Due to a failure of the Ministry of Education, he is transferred not to another northern town, but instead a similar-sounding town near Naples, in southern Italy. There he finds a school where the students, teachers and parents deal with the poverty of the south in a resigned and practical manner that he feels are unworthy of the morality, ethics and education children should learn. (For example, most of the children avoid school because they must work for a living to help support their families).