I would have liked this post better if we lived in an alternate universe where you can't run Windows on a Mac. Respectfully, reality makes the parent post a complete waste of time. A Mac is a place where you can learn about Mac, Windows and Linux tech all in the same place either by dual booting or virtualizing; take your pick. Parent poster will not get this on his/her Dell, at least not by legal, reliable, nor easy means. Prices for Macs have gotten better but, unfortunately, are still quite high, and Apple seems to think we don't need to modify/maintain our hardware. These are, IMO, the only reasons one would need to buy a Dell at all.
Maybe this argument about which laptop this school should be *forcing* kids to buy is moot. Is it not so that online/portal/cloud type services have evolved to a point where they may obviate the need for a specific platform anyway? IMO, any school that is only pushing platform specific software down for kids to learn on has invested wrongly in our future. In 20 years, it could be that only a few big greedy companies will be left desperately clinging to this idea. The rest of us will have moved to the online platform for most of our daily needs.