My first pick is an obvious one. I’m sure most YA fans have at least heard of, if not already read, Ransom Rigg’s Miss Peregrine’s Home for Peculiar Children (or seen its unfortunately lackluster movie adaptation).
I first read this novel during my final semester at university, and I was late to (0r flat out missed) several classes, because I could never put it down once I’d picked it up.
The original trilogy (including sequels: Hollow City and Library of Souls) is excellent, although this first one remains far and away my favorite. Riggs is also about to release the second book in the follow up trilogy, although I haven’t delved into that one yet.
Note: Definitely read these in order. They will make little sense if you start in the middle.