Is the razor blade stealth(late 2016) a good ultrabook?

Yes. Razer's been making solid laptops for years and the build quality on this thing is all aluminum but I'd say is in 2nd against the MacBooks lineups. It can do some lighter titles like Minecraft but if you just want a laptop for school, I'd would go with the $899 base i5 model. Or just get a chromebook. But hopefully you find this answer helpful. Best wishes!