• Online bullying often causes substantial disruption at school, leading to increased bullying at school. (thebullyproject.com)
Abrupt climate change is defined as a large scale change in the climate system which takes place over a few decades or less and is anticipated to persist for at least a few decades, and causes substantial disruption in human and natural systems. (metlink.org)
The decision, in fact, makes a mockery of Tinker's substantial disruption rule and eviscerates any student free speech rights except those favored by school officials. (educationnext.org)