the aim of this research is to investigate the validity and reliability of English proficiency test items as a measure of students' English achievement for requirement to have final examination and to explain conservation context of test items as manifestation of UNNES vision. This research applied research and development method of educational research (see Gall et. al., 2003; Sukmadinata, 2016; Sugiyono, 2017). It used descriptive, evaluative, and experimental methods. It gave a description of condition in UNNES, especially students' English proficiency, first prototype draft which would be tested, and result of comparison to different English test prototype of UNNES test takers The making of test items which reflects on the conservationbased materials gives significant improvement of the test takers' score of UNNES.