Do you know of any charts that show how loud classes are in Califonia?

Question

I need a visual aid for a presentaion on why classes should be quiet.

Answer 1

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Why should ALL classes be quiet? Certainly, if a math class is taking a paper & pencil test there should be little or no noise. (Just the scratching of pencil on paper.)

However, other classes should be noisy. Music classes should have a variety of sounds. So should many gym classes [balls bouncing and people yelling] and shop classes [saws, drills and hammers].

Why don't you rank a number of kinds of classes and the sounds associated with them. Provide a graph, with the quitest classes on the lower left and the noisiest classes on the upper right.