Library book management can often be a challenge for large families. Multiple children times multiple library books equals many and numerous opportunities for losing said books.
Although we don't have a perfect system for keeping up with everyone's books all the time, we have come up with a system that allows us to always know how many books each child should have and our system encourages the child to be responsible for his own books.
Each child checks out the number of books that corresponds with his or her age. The 14 year old checks out 14 books, the 5 year old checks out 5 books, and so on. This not only allows the older children to check out more books, but allows Mommy to know how many books each child should be turning in.
If a child is missing some books on library day, the number missing is deducted from the total allowed to be checked out. For instance, let's say the 8 year old can not find 2 of her 8 books because she has looked everywhere, Mommy, everywhere, and I really mean it this time, and they have vanished into thin air, as library books are wont to do. She may only check out 6 new books, yet she is still responsible for 8 and she must recheck the other 2.
Each time we go to the library, I know how many books each child should be bringing back. The child also knows and is aware that he or she will not be able to check out the agreed upon number until all books are turned in.
We still occasionally have fines for overdue books, but our system makes library book management a little simpler for this large family.