Meanwhile everyone still graduates and doesn't seem to be ale to figure out these things (https://ics.uci.edu/~jutts/AmerStat2003.pdf), which to me are some of the core lessons I'd impart on people, even if the class has nothing to do with calculating per se. Who cares if you can calculate a t-test if you don't know when to apply it?
But things like understanding the difference between significance and effect size is huge and matters regardless.
It's challenging.