Student skills test instruments, based on industry needs, help measure and ensure that students have the practical skills needed in the workplace. This study evaluated the performance criteria of students in concrete structure work, which was used as the basis for designing a work skills test instrument for vocational high school students based on construction service needs. This study involved vocational high school teachers, construction service providers, and vocational education experts as participants. The research data from the responses of the research participants were analyzed in terms of practicality and effectiveness index values, while the essence of the instrument was analyzed with the Lawshe index value. The instruments designed in this study were adjusted to types of concrete structure work. The results showed a practicality index of 4.83 and an effectiveness index of 4.93, while the Lawshe index value was 0.64. This study has found the vocational high school student skills test instrument very practical, effective, and essential as a tool for measuring the level of vocational student skills. This student skills test instrument can be integrated with a competency certification program for students before entering the workforce. The results of this study serve to recommend that related educational institutions implement the student work skills testing process. ©Authors.
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