drum into (one)
To teach someone something through intense and frequent repetition. A noun or pronoun can be used between "drum" and "into." The teacher tried drumming the material into them before the statewide exam, but he was still concerned they weren't getting it. You never listen to what I'm telling you! Do I have to drum it into you, or what?
drum something into someone
and drum something into someone's head; drum something inFig. to teach someone something intensely. Her mother had drummed good manners into her. She drummed in good manners day after day.