A friend of mine used to deal with students reluctant to give Shakespeare a fair chance by telling them Macbeth was a comedy. There’s some evidence:
When the Macbeths are told the king is murdered, Lady MacBeth exclaims, “What? In our house?”
(No, this old man got up in the night and went to the next castle over during the storm to end all storms.)
And when faced with all the unnatural stuff that happened during the storm – horses biting each other etc etc – MacBeth shrugs it off by remarking “'Twas a rough night”.
Once they laugh through the murder scene the kids would warm up to it