Exam are reported to be cancelled for today.
My high school chemistry, taught by Brigadier General Robert Wright, USAF, covered all sorts of fun things. Off the top of my head, Nitrogen tri-iodide NI3, azides, picrates, playing safely with elemental Sodium, Calcium, nitrous oxide as an anesthetic. Mr. Wright's favorite threat, to me, was to get out his grade book and display my mother's grades to the class, he taught with my grandmother and great-aunts, whose mother's had founded the school as charter teachers. My mother was a solid C in sciences, nothing embarrassing in those days.
She abandoned her education during the polio hysteria.
The class used NI3 as 'fly paper' by leaving bottle caps of sugar with a half dozen NI3 crystals on top on the window sills. A fly walking would step on the crystal and it would pop its leg off to the delight of the class.
I can't imagine what is taught in HS chemistry now-a-days, how to make a souffle on a Barbie range. "Math is hard, ** ** ***!"