This is certainly worth considering, as the saying goes "if you have a question, don't be afraid to ask it because someone else probably has the same question as you."
However much of formalized higher education occurs in large lectures where classroom discussion doesn't take place anyway. I am all about small class size where discussion takes place, but this is not always possible. Furthermore, in introductory levels the discussion is not really going to be discussion, it's going to be clarification of key points. One does not need to be in a small class room to have their points clarified, especially with the availability of vetted sources on the internet. When my EMT instructor taught something I didn't understand, I sought out my fellow students for an alternative explanation, but it's important to remember that they too may not have a grasp of the concept at hand and therefore will give you an inaccurate explanation.