On the Chrome OS front, the Acer Chromebook is just about the largest and best performing, the Lenovo Duet the most compact and convenient, and the Lenovo 100E the most affordable. The Acer Swift 3 is a bit more costly, but it's actually one of the best overall values on the market today.
The Asus VivoBook F512 offers possibly the best balance of price and performance, and the Lenovo IdeaPad 3 and HP X360 are right behind it. The two main considerations for student laptops are affordability and durability.