A plaintiff does not overcome the qualified immunity defense by alleging the violation of a right that is only defined “at a high level of generality.”... Instead, there must exist a clearly established “particular right” such that the official had “fair notice” of that right and its concomitant legal obligationsIn a prior elaborate decision (see prior posting), the 5th Circuit en banc held that even though the principal's actions were unconstitutional, she enjoyed qualified immunity as to claims that the student should have been permitted to hand out the candy canes to his classmates.
UPDATE: On June 3, 2014, the 5th Circuit filed a substituted opinion (full text) in the case modifying some of its language describing the test for qualified immunity. The quote in this posting was unchanged in the substituted opinion.