Now it is not very often that so fine an opportunity occurs to kill, by a single blow, the disposition to do willful, wanton injury, as this circumstance afforded; but the principle illustrated by it, bringing forward individual cases of transgression in a public manner, only for the sake of the general effect, and so arranging what is said and done as to produce the desired effect upon the public mind in the highest degree, may very frequently be acted upon.

Cases are continually occurring, and if the teacher will keep it constantly in mind, that when a particular case comes before the whole school, the object is an influence upon the whole, and not the punishment or reform of the guilty individual, he will insensibly so shape his measures as to produce the desired result.
(4.) There should be a great difference made between the _measures which you take_ to prevent wrong, and the _feelings of displeasure which you express_ against the wrong when it is done.

The former should be strict, authoritative, unbending; the latter should be mild and gentle.

Your measures, if uniform and systematic, will never give offense, however powerfully you may restrain and control those subject to them.

It is the morose look, the harsh expression, the tone of irritation and fretfulness, which is so unpopular in school.