Thank you for the thoughtful response. Having taught for a number of years… I agree. The system is set up to make sure that teachers only teach a fraction of what they know, and none of what they don’t know.
Instead of focusing on strategies to teach students how to collaborate and how to find their own learning opportunities, we restrict teacher licensing areas until they are so narrow that teachers can literally only teach one subject area without taking additional coursework (which they have to pay for)… and getting a second license usually doesn’t lead to an increase in salary, just an increase in work. A chemistry teacher is not licensed to teach physics, for example. An ESL teacher is not licensed to teach native English speakers, even if the curriculum is largely the same. We focus too much on standardizing the curriculum instead of providing a wide range of learning experiences.