Without a good teacher monitoring, most improv exercises favor bold, aggressive students. Whoever either thinks faster or at least acts fastest tends to affect the scenes more and therefore have more chances for feeling validated that they are doing well. While there’s a place for boldness (and certain exercises explicitly focus on being more bold), any good improv team has a mixture of aggressive types with more patient and calm energies.
Believing that, here are five simple rules of conduct which I think help the less aggressive students find their footing in lower level improv classes. These are also just common sense policies for fair play. They’re not meant to leave out aggressive students. And I never state them as being “for the students who are bit more hesitant.” They’re just good etiquette for improv scenes which happen to also help the non-alphas find themselves in the scene.
Merely my opinion: Take ‘em or leave ‘em, fellow teachers!