subject used title procedure interview vocational teacher sumatera dirgeyasa appropriate producing study matondang number developing good documentation concern state how score english clas word accounting especially make through based developed result reflection text descriptive student school wa need analysi collecting medan research 2132121047 judgment program category observing expert teladan data instrumentation development register quantitative stage consist design using busines utara since grade belong evaluation conducted balance SMK three 2018 writing wati identifying 2011 university educational key XI ABSTRACT sheet eleventh definition validation topic range material analyzed consisting questionnaire sarlinda