ɪn nˈaɪntiːnhˈʌndɹɪd sˈɪks, ɪt bɪkˌeɪm ðə nˈæʃənəl ɐsˌoʊsɪˈeɪʃən ʌv hˈɛd tˈiːtʃɚz, fɹʌmðɪ ɪnˈɪʃəlz ʌvwˈɪtʃ ɪts kˈɜːɹənt nˈeɪm dᵻɹˈaɪvz.
In 1906, it became the National Association of Head Teachers, from the initials of which its current name derives.