Forum Moderators: phranque
If you're entrepreneurial however, why not launch a wordpress driven site. Write a review about each book, title each review with the book and author name, break down the categories into book type (fiction, non-fiction etc).
From there have the librarian simply post a comment when a book is checked out, give it's expected return date etc. Leave comments off except to staff. Delete the comment when it's returned. 580 comments = 580 books out. To see which books are out, look at the comments etc. Tie the whole thing into a library map if you like. The site search feature will return books based on what you're looking for.
Now for the coup-de-gras, since the site is live to the world and outsiders might poke in from time to time - monetize it with something like amazon so that someone wanting to buy a book, can.
Hey - it would beat all of the schools other fundraising methods :p