For two hundred years, America ran its schools without training a single teacher. Schoolmasters boarded family to family, were examined by the town minister, and taught because they knew the material, often as a stopgap before the pulpit or the bar. The episode covers dame schools, town schoolmasters, and district schools, and the assumption that knowing a subject qualified someone to teach it.
No American institution trained teachers before 1823, but informal preparation existed, so the claim is better put as training being unimagined as a requirement. Historians also debate colonial literacy, especially for girls, and whether dame schools were real teaching or child-minding.



