How many movies have J.K. Rowling and Steve Kloves collaborated on?

They have worked on 10 movies together! Their first movie together was Harry Potter and the Philosopher's Stone (2001) while their highest rated movie together was Harry Potter and the Deathly Hallows: Part 2 (2011). They have not worked together since Fantastic Beasts: The Secrets of Dumbledore (2022). They are most known for their adventure films together.