The School of Abjuration emphasizes magic that blocks, banishes, or protects. Detractors of this school say that its tradition is about denial, negation rather than positive assertion. Yet others understand that ending harmful effects, protecting the weak, and banishing evil influences is anything but a philosophical void. It is a proud and respected vocation.
Called abjurers, members of this school are sought when baleful spirits require exorcism, when important locations must be guarded against magical spying, and when portals to other planes of existence must be closed.
History
Abjuration was the second school to be developed, likely inspired immensely by various creatures' desires to not get incinerated by wild Evocation magic. This spell school requires a thorough understanding of the universal laws of magic all schools share as well as an understanding of the laws of each individual school, that magic of all types might be blocked or undone.

Abjuration focuses on negating or removing other magics or preventing things from being altered, entered, or disturbed.