Would I have failed my speech test if I quieted down the class during my presentation?

So years ago I took a speech class and my classmates started talking while I was doing my presentation. I was SO close to telling everyone to shut their mouth I'm talking. It almost came out without me thinking. I never did but always wondered of the teacher would have thought about that as a good thing. Opinions?

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Public speaking class*
Would I have failed my speech test if I quieted down the class during my presentation?
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