I can't compose at a typewriter the way I do with a word processor. I would have to write it out by hand first. If the typing is just transcription, I could just as well be copying from an AI doc.
If you're doing it in class anyway, and providing typewriters, you might as well provide a locked down Chromebook. Cheaper and better for composition.
Writing an extemporaneous essay from start to finish in one draft on the spot is a skill that students were expected to develop in my educational experience in the US less than 15 years ago or so. If that's vanished, I'd be glad to see it come back.
> Writing an extemporaneous essay from start to finish in one draft
Every English class I had in high school focused so strongly on how important revision was, or at a minimum having an outline to work from. While AP tests expected us to dash off essays by hand in a single go I empathize with OP around how useful a tool revision is.
If you're doing it in class anyway, and providing typewriters, you might as well provide a locked down Chromebook. Cheaper and better for composition.