I use them at three different schools. I am able to color code them per school. They are strong and durable. I have to take them with me when I visit students at their work sites and they get a lot of use and abuse. They hold up better than other binders I have used.
My high school child has used these binders for the last 3 years! He's very hard on binders and folders and usually goes through 2 to 3 binders per subject during the school year. These binders are very sturdy hold alot and have an interior space to hold paperwork. The front has a plastic cover that he slids his syllabus in for easy reference. I have yet to buy a "replacement" binder during the year because these binders hold up so well. I won't buy any other binder - ever!
My kids use these binders for school. It's the only binder they will let me buy for them. They do not wear down like most binders. I'd rather pay a little bit more for this binder rather than having to replace one in the middle of the year.