"Library science" is a graduate degree.
When I was desperately looking for a career ca. 2009 I looked in the public libraries near me. Why the fuck am I gonna spend $50,000 to get a library science degree so I can be qualified to shelve books for $15,000 a year? A master's in library science was seriously a requirement for a $10/hour job. At the time I don't think I'd given up on getting an MFA and becoming a professor which pays fuck all, but I'd be making a thing I could sell on the side. The professional world is a big, dumb, stupid place where a master's in "communications" can net you a VP title at a bank and an equivalent in an actual field can net you Top Ramen for dinner every day