How many movies have Klaus Werner and Puppa Armbruster collaborated on?

They have worked on 9 movies together! Their first movie together was Schoolgirl Report Part 4: What Drives Parents to Despair (1972) while their highest rated movie together was Bedtime Stories for Grownups (1974). They have not worked together since Schoolgirl Report Part 9: Mature Before Graduation... (1975). They are most known for their comedy films together.