Many schools ask a special person to speak to students during the ceremony.

VOA: special.2010.05.28

I heard that students here speak in numbers a lot.

我经常听到这儿的学生谈论数字。

求学热十足的学校 - SpeakingMax英语口语达人

Students in the public schools speak more than 100 languages at home.

VOA: special.2009.01.12

When the all-girl Castilleja School in Palo Alto,California invited Khan to speak in person - he immediately connected to the students there.

VOA: standard.2010.03.26