Designing Prototype Product of English Test Book Materials for Indonesian Tertiary Students

English proficiency test is significantly pivotal for tertiary students as they prepare for their after-school work-life experience. In this case, students are obliged to obtain fair knowledge of global issues but also local-based phenomena students may be familiar with on a daily basis. Besides, competency in English contributes to one’s acknowledgement in building a career or pursuing higher education. That is why many educational institutions in Indonesia require students to obtain a school-leaving English proficiency certificate. In regard to this phenomenon, designing English test materials that accommodate students’ needs in accordance with particularly required competencies is prominent. This present study further examines the test specification construction results developed as an initial study of a standardized English proficiency test implemented in a private university in Indonesia. As a part of research and development project research, this current study focuses on developing a prototype product of English test materials including the design of the test book. The product results of this study are elaborated in four stages of test materials covering two skills of English proficiency test.