Touch of Class is a student singing group at Chantilly High School in Fairfax County,Virginia.

VOA: special.2011.04.01

They don't seem to be an ethnic group so much as a marginalized social class, but some have suggested a connection with the word "Hebrew."

他们并不像是少数民族,而更像是边缘化的社会阶级，但有些人指出它与希伯来这个词有关联“

耶鲁公开课 - 旧约导论课程节选

so it's a 250-person class, but we have a group of 50 that we go around with quite a bit.

这是一门250人的课，但是我们组成50人一组一起学习。

跟校友们的关系 - SpeakingMax英语口语达人

What do I have to do to this class-- this side of the class to put you in a different group from this side and different from that side?

我要对这个班做什么-,才能让坐在这一边的同学,和坐在那边的同学处于不同的群体？

耶鲁公开课 - 心理学导论课程节选