pɹˈaɪɚ tə ðɪ ˈoʊpənɪŋ ʌv pɹəvˈaɪzoʊ wˈɛst, ˈɔːl stˈuːdənts ɪnðə dˈɪstɹɪkt ɐtˈɛndᵻd pɹəvˈaɪzoʊ hˈaɪ skˈuːl wˌɪtʃ bɪkˌeɪm pɹəvˈaɪzoʊ ˈiːst wɛn pɹəvˈaɪzoʊ wˈɛst wʌz ˈoʊpənd.
Prior to the opening of Proviso West, all students in the district attended Proviso High School (which became Proviso East when Proviso West was opened).