I retired from teaching high school science - with great relief. It's not so much that kids wore me out, although some were certainly trying. It's more the cumulative effect of poor management, administrative overload, and crappy science pedagogy. Along with the corruption of science that is evident in medical and environmental science, there is parallel corruption in education. Climate change propaganda is heavier with each revision of the science textbooks to the point where I discouraged purchasing new textbooks for as long as possible. The other issue was the imposition of 'next generation' science standards which were trickling down from the state level. They were full of incomprehensible gobbledygook, as only educrats can produce. A key agenda item was to push climate change into as many corners of the curriculum as possible in the form of crosscutting concepts and enrichment activities. If you wonder why kids learn so little in school, part of the issue is that mandated curriculum elements waste so much time with propaganda and feel-good projects that there isn't time to properly learn the basics. It's all connected.