The liceo classico or ginnasio is the oldest public secondary school type in Italy. Its educational curriculum spans over five years, when students are generally about 14 to 19 years of age.

Secondary education in Italy lasts eight years and is divided in two stages: scuola secondaria di primo grado, also known as scuola media, corresponding to the ISCED 2011 Level 2, middle school and scuola secondaria di secondo grado, which corresponds to the ISCED 2011 Level 3, high school. The middle school lasts three years from the age of 11 to age 14, and the upper secondary from 14 to 19.