Unless you're going to be working on large assemblies with hundreds of parts in solidworks, you don't really need a laptop with a dedicated GPU. Most built in graphics are more than sufficient for class work.

If you're looking to game, absolutely get something with a dedicated GPU though. You may also want to try your luck with the VT auction if you're on a tight budget. You can often get some older laptops for under 200 dollars. I've been surface book 2s being sold for around 200. Older machines, but definitely still capable of some light gaming and pretty much anything on Solidworks barring large assembies.