It wasn’t until after Columbine, though, that we really saw a rise in books involving school shootings. Since then, we’ve seen “Give a Boy a Gun” by Todd Strasser, “Whale Talk” by Chris Crutcher and “Nineteen Minutes” by Jodi Picoult, just to name a few.

And if you ask Blasingame, “a well-written young adult novel can save a life.” He has interviewed scores of authors who have told him time and again how often they receive letters and emails from students who tell them their book changed their life for the better because it validated their personal experience and made them feel less alone.

Still, some approach with caution the proliferation of books that depict violence as commonplace.

“While reading about a character successfully coping with such an event could promote well-being, particularly if this is accompanied with a conversation with a caring adult, there is also concern that it may unnecessarily create fear,” said Sarah Lindstrom Johnson, an assistant professor in ASU’s T. Denny Sanford School of Social and Family Dynamics.

Some research seems to suggest that the value of books like “Mercy Rule” is their ability to teach kids about warning signs, what could lead to violence in schools and how to prevent it.

In a 2009 study out of Iowa State University, researcher Jill Hathaway found that when students read books about teen violence, particularly school shootings, they had a higher level of cognizance of what caused the violent behavior.

According to Blasingame, bullying is a big cause, but so are unhealthy relationships, whether romantic, platonic or familial. That all hearkens back to what Leveen had in mind when he was writing “Mercy Rule.”

A lot of the things that happen in the book are stories he heard from real students at schools he has visited. The thread that seemed to tie all their experiences together was the theme of dismissal, whether they were dismissed by peers in the form of bullying or by friends and family who didn’t take the time to sit and really listen to their problems and concerns.

“I used those stories because I wanted to draw characters that we could all relate to and that would surprise us, and make us think differently and realize that we need to listen and have conversations,” Leveen said.

“That’s what’s missing, I think, not only [in our everyday lives] but also on a larger scale. … We’re venturing into another discussion about gun control, and that’s great. But do we know how to talk about this? Or have we completely abandoned any sense of procedure, any sense of meeting someone in the middle and actually working on some kind of solution, or are we just completely blocking each other out?

“So I hope this book will make people be more considerate about how they engage with people in the future.”