The majority of principals believe that suspending students is an ineffective way to help students reflect on their mistakes. Yet, it continues to be a dominant disciplinary practice.

Principal Robert Motley calls Atholton High School's Black Student Achievement liaison a "godsend," adding, "Her presence has had an impact on grades, attitudes and discipline." Several schools across the country are putting similar advisory and intervention programs in place.

A new guidebook released by the Principal Recovery Network offers help on how to recover from trauma caused by school shootings.