How to Weed by the Numbers and Clean Up Your Collection

How to Weed By the Numbers and Clean Up Your Collection | Weeding can be emotional and hard sometimes. We attach so much to books. But if you focus on the data, it can be so much easier to clean out your collection.

I love weeding. A well-curated library collection makes me happy. But weeding can be difficult. We attach a lot of emotion to books. Others don’t understand why anyone would ever want to get rid of books. We have to hide our weeded books for fear of misunderstanding from teachers, parents, students, and administrators. There’s a ton of great acronyms out there to help your weed, but I personally prefer to use data. Numbers are cold, unemotional, and hard to argue with. They can help you defend why you need to clean up your collection (and help you secure funds to update it).

Data Is Your Friend

Download your shelf list/circulation data as a spreadsheet. Become comfortable with spreadsheets. For this exercise, look at the books as numbers. Check for statistics like these:

  • No circulation in the last five (ten, fifteen) years.  
  • Books whose publication dates are older than you (or your kids). (This isn’t a hard and fast rule, but one to consider)
  • Books that haven’t been checked out since your students’ parents were in high school. (The first time I did a major weed, I got rid of everything that hadn’t been checked out since I was born in 1984. It was close to 1,000 books!)

Start sorting your spreadsheet and focus on your criteria. Want to weed 1,000 books? Keep tweaking your limits until you reach the number of books you need to weed (i.e., I’m going to weed every book that is at least 15 years old and hasn’t circulated in 10 years.). Pull those books and weed them.

Aged Titles

Many vendors, such as Follett, can automatically generate aged title lists for you.  If you can, cross-reference this with circulation data to get an even better picture. I’ve weeded books on the e-mail addresses of the rich and famous from 1994, a Microsoft Powerpoint 2001 Manual (in 2017, at a 1:1 iPad school), and books on the Soviet Union that were written during the Cold War. When a title is CLEARLY out-of-date, it’s hard for someone to argue against weeding it.

Data Will Help You Get Funds for New Books

It’s easier to get funds if you tell your administrators that you need to get rid of 75% of your science and technology books because they’re all out of date. You can use numbers such as the recommended number of books per student for your grade level, raw numbers on how many books you have in each Dewey category or genre. Administrators love data, and if you can clearly show them where the needs in your collection are, you’re more likely to find funds. Data is great for grant applications as well.

Get a Clear Idea of What Your Students Are Reading

Numbers help to make it very clear what your students are reading. If a book has had zero circulations in ten years, it’s taking up shelf space that could hold something students want. If a particular title has TONS of circulations, that’s a good sign that you need more copies.

Author: Diana Rendina

Diana Rendina, MLIS, is the media specialist at Tampa Preparatory, an independent 6-12 school. She was previously the media specialist at Stewart Middle Magnet School for seven years, where she founded their library makerspace. She is the creator of the blog RenovatedLearning.com & is also a monthly contributor to AASL Knowledge Quest. Diana is the winner of the 2016 ISTE Outstanding Young Educator Award, the 2015 ISTE Librarians Network Award, the 2015 AASL Frances Henne Award & the 2015 SLJ Build Something Bold Award. She is an international speaker on the Maker Movement and learning space design and has presented at conferences including AASL, FETC & ISTE. Diana co-authored Challenge-Based Learning in the School Library Makerspace and is the author of Reimagining Library Spaces: Transform Your Space on Any Budget.



Categories: Blog Topics, Collection Development, Professional Development

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3 replies

  1. I’m church librarian for a small church — 40-60 on regular Sundays. I’ve been doing it for ~20 years. We have maybe 120 – 150 feet of books, with ~12 feet of reference books/Bible/Bible Dictionaries, etc.

    If I used those criteria, I’d have enough books to put on the fireplace mantel. Most books have not been checked out. Ever. Period. At all. And that has not changed since I started.

    I do have a set of religious fiction books by one author that the ladies must have obtained for a book study. A few have read all the books in the set, most have only read some.

    The person who trained me, (no I don’t have a degree) talked about having books in different categories — 3/4ths of the collection is in the 200’s. So I’ve looked for conservative and liberal authors, devotions, well-known preachers/writers in our denomination, a minimum on world religions, writings on most of each of the books in the Bible, and classics in the area of religion and philosophy. We also have just been gifted with ~two hundred books on social work, counseling, suicide, depression, listening,etc. from a suicide hotline that closed.

    I have had compliments from different pastors on having a good selection, which made me feel good. Pastors who like to read have read a lot of what I have. Pastors who don’t like to read — and there have been a few — don’t.

    Two surveys done in the last 10 years have elicited requests for ebooks (no money) and fiction. Since there are sooooo many authors in religious fiction, I asked them to let me know who they liked. No response.

    Currently we use strictly author cards, title cards, etc. but we have been given a computer. My goal is to put all the cards on the computer, in the cloud, so people can access the books from home, find out what is in the library, and I could have them ready when they come in.

    I need a recommended cloud source that people can access from home.

    And, I don’t have room for the books we’ve just been gifted. I’ve already moved all the children’s books to the appropriate Sunday School Rooms, and spread out the extra sets of Bible Dictionaries for ease of use.

    Tradition has me putting new books out on display separate from the rest for a couple of weeks. But it’s getting close to where I have work some magic.

    I know this is not your specialty, but I’m hoping you have some starting points for me.

    And — where do your books go that you weed?

    And — Thank you very much.

  2. How does one weed books in a fiction section that are mostly accelerated reader books and meet/fit the weeding criteria above? most of my fiction books are “A R” but a majority are not circulated.

  3. Great post, Diana! I always did weeding “by the numbers” by running reports in the library automation system, and am always amazed that so many librarians are unaware that they can customize reports to get exactly what they need. Thank you for explaining that so eloquently.

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