Total Number of High School Books: 3,440
Unbroken
Unbroken Bonds (The Bonds that Tie Book 6)
Unchanged (Unremembered, #3)
Uncrowned (Cradle, #7)
Underground America
Underlord (Cradle, #6)
Undertale: Surviving the Underground
Underworld (Abandon #2)
UnDivided (Unwind Dystology Book 4)
Unicorn Famous (Phoebe and Her Unicorn Series Book 13)
United (Alienated #3)
United as One (Lorien Legacies #7)
Unravel Me (Shatter Me #2)
Unsouled (Cradle, #1)
UnSouled (Unwind Dystology #3)
Unspoken (Shadow Falls: After Dark #3)
Until I Die (Revenants #2)
UnWholly (Unwind Dystology #2)