<human>:  Would The Dark Knight be appropriate for a preschool class?
<bot>: No, The Dark Knight is a 2008 film directed by Christopher Nolan that is probably not appropriate for a preschool class. Preschoolers are between 3 and 5 years old. The Dark Knight is rated PG-13. PG-13 is a rating that means parents are strongly cautioned that the content of a film may not be appropriate for children under 13. So The Dark Knight is probably not appropriate for preschoolers.