ʃˈɔːɹtli ˈæftɚ mˈuːvɪŋ tə nˈuː jˈɔːɹk sˈɪɾi, hiː bɪkˌeɪm dᵻɹˈɛktɚɹ ʌvðɪ ˈɑːɹbɛɾɚɹ ˈɔːɹdən ʃˈʌln, ænd hˈɛlpt sˈɛt ˌʌp ɐ nˈeɪʃənwˌaɪd nˈɛtwɜːk ʌv ðiːz skˈuːlz, ɹˈiːtʃɪŋ ɐ pˈiːk nˈʌmbɚɹ ʌv wˈʌnhˈʌndɹɪd fˈoːɹɾi.
Shortly after moving to New York City, he became director of the Arbeter Ordn Shuln, and helped set up a nationwide network of these schools, reaching a peak number of 140.