The kids knew sign language? The kids went and bought stuff (incl laptops) at multiple stores? And wasn't there a long line at Apple? How'd they make it to so many other stores? The kids physically go to the store to buy school computers? The kids are such good actors that they fooled the author & all other salespeople? A teacher would actually allow kids to pretend that they're disabled? No bulk discount or pre-arra…
Regardless of the questions about the story, as a former Apple retail employee, I can tell you that this isn't an unrealistic story. I had a few interactions with people who were deaf that worked much like this. It was always a memorable and uplifting experience to find ways to use our demo units for more productive purposes.
The fact that a Mac sales guy was walking back and forth from stockroom to floor, fetching each MacBook for 15 students individually, and no manager took him aside to ask what the hell he thought he was doing, did he not notice that [unidentified product X] had just launched and that the store was full of waiting customers... does not ring true.