Why do classroom teachers craft individual lesson plans instead of using uniform ones developed by higher-level curriculum experts?

Curriculum and Instructional Design
1

I question why standardized lesson plans aren’t adopted despite similar classroom needs. What factors require teachers to develop unique lesson plans for effectively addressing their students’ differing dynamics?

2

i reckon teachers make their own plans bc every class has its own vibe. a generic plan often misses the unique needs n quirks in a specific classroom setting