If we replaced half of our administrative staff with classroom teachers, we might actually get a majority of our classes back to 20 or fewer students per teacher.
如果我们用课堂教师替换一半的行政人员，我们可能会让大多数班级回到每位教师管理20名或更少的学生的情况。
Teachers call over each class or after an interval of one or two classes and write down the names of the absent students.
每节课老师都点名或者在一节课和两节课之间的间隔中点名，然后写下缺席的学生的名字。
Some college teachers who teach three classes consider themselves less successful than those who teach only one or two, or none in all.
有的大学老师上三节课的老师认为他们没有那些只上一两节或是根本不上课的老师成功。
On the one hand, on-line education can provide choice lectures and classes given by famous teachers or schools across the world.
一方面，网上教育能够带给选取讲座和课程由世界各地的著名的老师或学校。
Students requiring a leave of absence, late or early dismissal are urged to inform their teachers before or after classes.
学生如因病或事请假，迟到或早退，请在上课前或后通知该班老师。
We always skipped classes, and some parents and teachers just didn't care or even didn't know.
我们常常逃课，一些家长和老师却不在意，甚至根本不知情。
In music classes, the teachers only teach us how to sing a song or make us listen to music.
音乐课上，老师仅仅带着我们唱歌或者听歌。
In music classes, the teachers only teach us how to sing a song or make us listen to music.
音乐课上，老师仅仅带着我们唱歌或者听歌。
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