These binders lasted the whole year for my kids. Only one got ruined but it appeared to have caught on something. This is why we bought few more for this coming year. The other binders seem to break in the rings on covers tear. Hope this helps!
I have one that I have been using for 5 years now (from grade 7 to grade 11) and may even use it next year. The only problem I had with it was the plastic view pocket and holders which ripped the first year I got it. As well the rubber edging is great but it makes it slightly difficult to get it in and out of your backpack with ease quickly.