A couple years after I graduated college, I came across the 1972 movie of Macbeth. The experience was so drastically different from reading it in high school that it seemed like a completely different play. Suddenly, it all made sense now that I had a visual context.

I remember one of the characters (Macduff?) covered in blood after a battle and grinning about how he had opened up his opponent "from the knave to the chop" with appropriate gestures. I remembered that specific phrase from high school and now, instead of being an abstract comment, it had actual meaning that I could relate to.

I'm of the opinion that most plays simply shouldn't be taught in high school English class. There just isn't enough context to really understand them.