Comment: I expect the teacher to be called into principal's office

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In reply to comment: Teacher better be careful. (see in situ)

I expect the teacher to be called into principal's office

...and some parents will complain.

We all want progress, but if you're on the wrong road, progress means doing an about-turn and walking back to the right road; in that case, the man who turns back soonest is the most progressive.

-C. S. Lewis