> As a former teacher, I know you need to have a good grasp of the material you are using in order to help students understand it. The material should also be in a similarly structured form thoughout a course, which will reinforce the expectations of the students, making their mental load lesser. The only way to do this is to prepare the material yourself.
It's absolutely necessary to have a good fundamental understanding of the material yourself. These teachers abusing AI and not even catching these obvious issues, clearly don't have such an understanding - or they're not using any of it, which is effectively the same. In fact, they're likely to have a much worse understanding than your average frontier LLM, especially given this post is about high school level teaching.
> The only way to do this is to prepare the material yourself.
As brought up in other comments, what is yourself? For decades teachers have been using premade lesson plans, either third-party, school supplied or otherwise obtained, with minor edits. All teachers? Of course not, but it's completely normalized. Are they doing it themselves? If not, then the remainder did it together with Google and Wikipedia. Were they also not doing it themselves? Especially given how awful modern Google is (and the worldwide number of high school teachers using something like Kagi will be <100 people), simply using a frontier model, especially with web search enabled, is simply a better version of doing that, if used in the same way.