It could be a hardware issue. I've found that if the screen drivers fail it usually switches to a text console or reboots into one. Assuming you have a laptop, does wiggling the screen make any difference. If its a desktop, try wiggling the power connector or video cable (both ends) and along the cables, sometimes stress can break the wires in the cables if they go around a bend.
The rot really began with Google and the the goal of "professionalism" in teaching.
Textbooks were thrown out, in favour of "flexible" teaching models, and Google allowed lazy teachers to just set assignments rather than teach lessons (prior to Google, the lack of resources in a normal school made assignments difficult to complete to any sort of acceptable standard).
The continual demand for "professionalism" also drove this trend - "we have to have these vast, long winded assignments because that's what is done at university".
AI has rendered this method of pedagogy void, but the teaching profession refuses to abandon their aim for "professionalism".
When I was in year 5 the kids in the class had been working cutting apricots and they bought tonnes of candy and these whistles they were blowing all the time.
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