Make sure you handle black-and-white rules differently from non black-and-white ones.
The key difference in the way that the two kinds of rules are handled is that it is more reasonable to have an immediate consequence for the black-and-white kinds of misbehaviors.
For the rules that are not so clear, it is more fair to give an informal warning before giving a consequence. The best example of this is having a rule against excessive talking. Too much talking is not easily measured. As a result, an informal warning should be given before the rule is counted as being broken. This can method can help clear up teachers’ fears of inconsistency when enforcing rules.
Coming soon: Mythbusting common misconceptions about effective discipline