This binder is definitely durable but the inside clear pocket on the back is not practical at all. Because of the way the rings are positioned it is difficult to insert an 8.5 x 11 sheet of paper in the back pocket easily. The paper has to be positioned under the rings which requires that the paper be bent and stuffed in order to fit. The front inside clear pocket holds paper much better than the back though.
I use these binders for business and personal use. I put bank statements insurance policies year end papers in them. I also use them for my medical information. These binders are durable and I have found that the variety of sizes and colors fit my needs.
Will be using for homeschool math workbook 4 children using the book. Have yet to see its durability. Spine seems stronger than the Avery products I've tried. Wish me luck.