How many movies have Helmut Früchtenicht and Klaus Werner collaborated on?

They have worked on 2 movies together! Their first movie together was In Trouble (1971) while their highest rated movie together was Schoolgirl Report Part 6: What Parents Would Gladly Hush Up (1973). They have not worked together since Schoolgirl Report Part 6: What Parents Would Gladly Hush Up (1973).