National Public Radio asked exactly this question in a survey a year or so ago and they got the following principal responses back.

国家公共广播电台问过,完全相同的问题,在一次一年前的民意调查中,他们得到了如下的回复

耶鲁公开课 - 聆听音乐课程节选

That's a good question. As a parent or as a principal?

这个问题很好。从父母还是校长的角度来说呢？

驯服淘气的人 - SpeakingMax英语口语达人