Primary! (2010)

This explosive celebration of children's creativity follows the lives of students and their teachers in a peculiar yet somewhat recognizable primary school. When Jose Maria, more apt at lecturing fine arts at university than controlling a primary classroom, fills in his new post as art teacher, chaos seems on the verge of unleashing itself. However, the path that his young and infinitely imaginative little students take him through shows him there's more than a little he can learn from them, and a new life to discover...

Unfortunately the movie Primary! is not yet available on HBO Max.