hammer (something) into (one's) head

To commit some piece of information into one's or someone else's long-term memory, especially through intense repetition. How many times do I have to hammer it into your head? Do not drive my car unless I give you permission first! I've just been trying to hammer these formulas into my head for the big test tomorrow! A: "Mom, how do you still remember the quadratic equation?" B: "I don't know. I guess my high school tutor really hammered it into my head!"