When the adult service gets interrupted by 10 kids crying because Nemo died, the parents will not be happy. A Sunday school teacher is usually a volunteer, which unfortunately makes all the parents feel that it's their right to critique his or her every action. Also, there is typically more of an age range in these situations than in a traditional educational classroom, some kids might not be emotionally mature enough to deal with these issues when ages might range from 4 to 10+. I'm not suggesting that the kids should actually be *lied* to, just that their "exposure" can be minimized. Of course, that's just my opinion!