Valditara was full professor of private and public Roman law at the Department of Law of the University of Turin. He was scientific director of the legal journal European Legal Studies published by the European University of Rome, as well as rector of the degree course in Law of the same university.[2]
In 2001, he was elected senator for the center-right coalition and remained in office for three terms until 2013. He is now a member of the League.[3]
On 22 October 2022, Valditara was sworn in as Minister of Education and Merit in the cabinet led by Giorgia Meloni.