The Liceo Classico Azuni, in Sassari, Sardinia, has closed after local authorities found the attic was at risk of falling through, La Repubblica reported on Wednesday.
Four hundred students were sent home as a result as the head teacher looks for a way to resume classes, the newspaper said.
The Sardinian school is famed for educating some of Italy’s key politicians, such as Antonio Segni, president in the 1960s, and Francesco Cossiga, who served as head of state from 1985 to 1992.
Palmiro Togliatti, former leader of the Italian Communist Party, and Enrico Berlinguer, former party secretary, were also students at Liceo Classico Azuni.
The news comes less than two weeks after part of a ceiling at the Liceo Classico Dettori on the island caved in. A teacher and two students were injured, La Repubblica said.