sometimes, the right number is 2

The portability of laptops can be critical in a school environment. You can't take your desktop to a lecture and take notes. But you can do it all with a tablet. So perhaps the ideal solution is to have a nice tablet and a powerful desktop. The combination will be cheaper than a very high end MacBook Pro.

I suggest you think carefully about your requirements before you spend money. You can even buy an inexpensive Windows laptop (one incapable of gaming) and a desktop for the cost of a good gaming laptop. Microcenter, NewEgg, etc have low end Windows laptops for under $350