The link you followed will bring you to this page:

https://www.miur.gov.it/documents/20182/0/Principali+dati+della+scuola+-+avvio+anno+scolastico+2019-2020.pdf/5c4e6cc5-5df1-7bb1-2131-884daf008088?version=1.0&t=1570015597058