[Koha] Ceiling date

Hi, We use Koha for our school media centers (libraries). We are approaching the end of the school year here and I need to set a ceiling date for all the materials to be returned. The problem I have is that the High School needs a much later ceiling date than everyone else in the district. Is there a way to set separate ceiling dates for different libraries? If not, is there a way to accomplish what we need another way? Thank you for any input you may have! *Katie Aust* Library Technician New Haven Unified School District (510) 471-1100 ext 60437