If I wanted a laptop without a dGPU I would have just opted for the 12-inch MacBook. I'm saying it's ridiculous for Apple to be selling MacBook Pros as premium, pro-level notebooks without a dGPU. The Surface Book looked like a real competition to the 13-inch MacBook Pro because they're priced about the same and yet the Surface Book offers a NVidia dGPU which delivers superior graphical performance that iGPUs can never do.
The surface book with the 940m cost 1900$.
Also there is absolutely nothing "pro" that you could do with a 940m that you couldn't with the upcoming Iris 550/580.
I use a 8 year old computer as device "on the go" with a 170 GFLOPS dGPU to work with Autocad and 3Ds Max proyects with +1.000.000 polygons and no problems.
If you want something to play games at school just buy a razer.