Liberation Day is when Italy celebrates the end of Fascism and the Nazi occupation in World War II.
The teacher gave the students of the Aurelio Covotti school in Ariano Irpino the score of Faccetta Nera (Little Black Face), a song about the Second Italo-Ethiopian War.
The principal told daily newspaper Il Mattino that it was perhaps a provocation and the teacher, who was given a written reprimand, was not a right-wing extremist.
The teacher himself told the newspaper that the row was a misunderstanding and he had simply found the score on the Internet after some of the pupils asked about the song.
He said he had done the same thing with other songs, including Bella Ciao, a song dedicated to the Italian Partisans who fought the Nazis.
ANSA