Unions are based on the idea that fungible "workers" need to unite against "management" to avoid being replaced with workers who will accept lower compensation.

Unions are based on the idea that fungible "workers" need to unite against "management" to avoid being replaced with workers who will accept lower compensation. The primary interest of unions is to preserve for their members jobs that pay above-market compensation. The presence of teachers' unions means that teachers see teaching as an industrial factory job in a mature field where no more innovation is possible. Students in such a world are the products of the factory. They come into the school system at 5 years of age as unprocessed raw material and they exit 12 years later as high-school graduates, ready to take on a job. This whole mindset is wrong. The industrial-factory model of schools should be abolished. People, whether young (students) or old (teachers), are not fungible. They should not be viewed as factors in factory. They are not.