How many movies have Gianluca Manunza and Gianni Ferrio collaborated on?

They have worked on 3 movies together! Their first movie together was How to Seduce Your Teacher (1979) while their highest rated movie together was The Repeating Student Winked at Dean (1980). They have not worked together since The Repeating Student Winked at Dean (1980). They are most known for their comedy films together.