ɪn nˈaɪntiːnhˈʌndɹɪd sˈɪksti wˈʌn, ðə dˈɪstɹɪkt ʃˈɪftᵻd ɐn ɐtˈɛndəns bˈaʊndɚɹi sˌoʊ ðæt mˈoːɹ stˈuːdənts fɹʌm bˈɛlwʊd kʊd ɐtˈɛnd pɹəvˈaɪzoʊ wˈɛst, ɪn ˈɔːɹdɚ tʊ ˈiːvən ˈaʊt ðə stˈuːdənt pˌɑːpjʊlˈeɪʃənz bᵻtwˌiːn ðə tˈuː bˈɪldɪŋz.
In 1961, the district shifted an attendance boundary so that more students from Bellwood could attend Proviso West, in order to even out the student populations between the two buildings.