Everybody wants a creative child - in theory. The reality of creativity, however, is a little more complicated, as creative thoughts tend to emerge when we're distracted, daydreaming, disinhibited and not following the rules. In other words, the most imaginative kids are often the trouble-makers.
Eric Barker recently referred me to this interesting study, which looked at how elementary school teachers perceived creativity in their students. While the teachers said they wanted creative kids in their classroom, they actually didn't. In fact, when they were asked to rate their students on a variety of personality measures - the list included everything from "individualistic" to "risk-seeking" to "accepting of authority" - the traits mostly closely aligned with creative thinking were also closely associated with their "least favorite" students. As the researchers note, "Judgments for the favorite student were negatively correlated with creativity; judgments for the least favorite student were positively correlated with creativity."
Link to study: http://www.informaworld.com/smpp/content~content=a790767558&db=all
You should really go read Leher's post and the comments there, plus the study.