I wouldn't call those budget laptops, and they are basically the same except for the SSD, more like mainstream gaming laptops. Gaming GPUs are certainly somewhat beneficial to 3DS Max use, but not as much in the rendering department, and the i7 won't hurt.
Should work for what you want it to do though.
Dell has a few offerings in their Precision series you might look at with low-end professional graphics cards. A lot of Autodesk products can take advantage of the drivers those work with.
The gpu will depend on the level of complexity that you are teaching the kids. If you need a lot of gpu then the asus rog is the best. But if you just need to teach the basics the dell with the amd firepro is the best.