The only undergraduate class I had to repeat (because I failed its outdated-ness) was a 1hour lab for physical chemistry, which was taught by a geriatric whom still expected us to use decades-outdated "scientific software" [still DOS prompts, in mid-2000s?!?!] to perform calculations in support of since-disproven theories (mostly: his).

His class had a similar $$self$-$published$$ "book" [a packet of stapled 10lb paper] which hadn't been updated since his thesis, some sixty years earlier (literally 80+, now). Required turn-ins carried serialized imprints!

RIP when he died that summer and next year I retook the same class, with much more ease / better instruction.

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Dr. Shithead's wife was actually responsible for my entire scholarship, sweet-as-pie, and we'd often joke about her husband's "reputation" – he's so gentle with me, but I know who he is.

Both are longdead, now – thanks Drs. T-s!