They just put up with it. "They'll never tell you it's broken": https://pointersgonewild.com/2019/11/02/they-might-never-tel... In this case, I think most people replace their iPads before they are old enough to attend middle school, so the problem wouldn't arise.
----
`font-display:swap` is great
Font-display on CSS-Tricks: https://css-tricks.com/almanac/properties/f/font-display/
MDN: https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/...
Can I Use: https://caniuse.com/css-font-rendering-controls
Last iOS for my iPad 4: https://en.m.wikipedia.org/wiki/IOS_version_history#11.1
^^^^ October 31, 2017
----
I don't expect things to work well in these circumstances.
Completely out of scope.
I do wonder, though, what the wide world out there -- the non-computer-programmers -- might take away from all this.
A web browser is the USB-C of software.
It plugs into everything, and most people have no mental model of why things fail the way they do.
Thanks very much for gwern.net, an inspiration for non-blogging me.