Bullying is characterized by aggression used within a relationship where the aggressor(s) has more real or perceived power than the target, and the aggression is repeated, or has the potential to be repeated, over time. Bullying can involve overt physical behavior or verbal, emotional, or social behaviors (e.g., excluding someone from social activities, making threats, withdrawing attention, destroying someone’s reputation) and can range from blatant aggression to far more subtle and covert behaviors. Cyberbullying, or bullying through electronic technology (e.g., cell phones, computers, online/social media), can include offensive text messages or e-mails, rumors or embarrassing photos posted on social networking sites, or fake online profiles.
Source: Dear Colleague Letter: MS Word (91KB) | PDF (1.4MB)
Effective Evidence-based Practices for Preventing and Addressing Bullying
And Hollywood is in on this too!
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Building Momentum in Schools 