Any change cannot occur without recognition of the need to change (too many Dr. Phil episodes have told us this). True change and true cultural change cannot occur unless it affects us or the group at an emotional level. Change is about learning and learning occurs best when it is attached to an emotion.
There is no true story that doesn't make you laugh and cry. No matter how awful and tragic a story there is always an element of comedy. It releases tension - we need that release - even Shakespeare does this in the beginning of Macbeth before the murder of King Duncan where there is some serious comedy schtick going on (pardon the pun...).
It is the shy kids who are easy to forget. They can be ushered into the corner by the teacher/director or the other actors/students and overlooked because they generally won't complain. They will accept the status quo because they won't want to rock the boat. Their creative skills enable them to show acceptance and contrition when faced with missing out on opportunities.