KeyWords and Expressions:to have discipline problems; to keep order (said of teachers); to come to order (said of pupils); to play truant; to mark the register (to take attendance); to cope with difficult students; to maintain discipline in class; to establish communication; to undermine discipline; a feeling for atmosphere ; to rap one's knuckles on the desk; to impose silence; to send smb. to the head's office, etc.
<40>