Blackboards Persian , Takht siah is a 2000 Iranian film directed by Samira Makhmalbaf. It focuses on a group of Kurdish refugees after the chemical bombing of Halabja by Saddam Husseins Iraq during the IranIraq War. The screenplay was cowritten by Makhmalbaf with her father, Mohsen Makhmalbaf. The dialogue is entirely in Kurdish. Makhmalbaf describes it as something between reality and fiction. Smuggling, being homeless, and peoples efforts to survive are all part of reality... the film, as a whole, is a metaphor.
Source: Wikipedia