Casablanca works well for learners who already understand English comfortably and want more challenging listening practice. Most of the language stays fairly accessible, so learners can spend more energy following the scene than decoding difficult words (more than 78% of the words come from common English vocabulary). There is enough plot detail to keep learners engaged without making the whole experience confusing. The dialogue moves at around 121 words per minute, with frequent back-and-forth exchanges. If your English is close to B2/C1, Casablanca can be useful for getting used to faster spoken English.