Grey Haven - The Dreamer Chronicles, #1

Nightmares are real and killing people as they sleep. 18-year-old Julie Aim has been chosen to attend the prestigious Grey Haven - a school that teaches people like her how to hunt the demons that haunt nightmares. Six months into her training, she's still got a lot to learn about the school, her abilities, and the very deadly, very complex dreamworld she protects. But after a lifetime without one, she finally feels like she's found a home.
It has everything to do with her best friends, Carrie and Tommy, and the strange pull she has to protect Grey Haven at all costs. When attacks begin happening at the school, Julie is pulled into a plot of betrayal, uncomfortable social encounters, and murder. When everyone but Julie, Carrie, and Tommy is put into a deep sleep they can't wake from, it's up to Julie to unravel the truth and stop the attack before everyone at Grey Haven is killed.
Grey Haven is the first book of The Dreamer Chronicles.