I manage my schools IT - and when we started out a few years ago my board were pushing aggressively for Chromebooks. The service provider were talking about how they could roll out hundreds of Chromebooks at the touch of a button. When I asked about the lifespan of a Chromebook I got vague answers. I knew we would get a couple of years max out of each one so I instead pushed for much more expensive MacBooks. 5 years on and we are still using our original MacBook we got back then, with photoshop and other software.