What should a student do if a majority of the class failed a test

I have a health class where we just took a test about drugs. And more than half of the class failed. Like with 27 percent to 60 percent. I personally got a 65. But the thing is, I genuinely did not feel prepared for this test because all the teacher did was give us 6 pages of notes that we’ll have to copy down each day and talk when we’re copying down, so none of us can possibly hear him and jot down the note at the same time. And then, if we get distracted for a little bit, he’ll threaten us with words like, “Well, I guess you guys aren’t going to copy down this whole page of notes and possibly fail your test”. And I really did study for the test, I wrote rewrote down almost 20 pages of notes over and over again without a study guide or anything to determine if I was studying the things I should be. Since the teacher expects us all to memorize everything he taught within 2 months.