The teachers' competencies in the process of internationalization of higher education (IHE) are of vital importance (Brandenburg & Federkeil, 2007; van der Werf, 2012). The extent of IHE in a university is in a close relationship with the teachers' competencies (Harari, 1981). However, the required competencies of teachers in IHE are not a well-studied topic. Similarly, the "dearth of literature on EAP professional development" (Blaj-Ward, 2014, p. 113) has complicated exploring the EAP teachers' competencies. The absence of a competency model addressing the needs of EAP teachers to effectively engage in the education fitting the IHE objectives and policies gave impetus to this study. In line with this objective, an instrument measuring EAP teachers' competencies was designed and validated. The following steps were taken to develop the instrument: the theme extraction and item generation phase, the piloting phase, and the validation phase. The extensive review of the literature and interviews with IHE experts and EAP teachers yielded 8 competencies. This initial framework led to the development of the preliminary version of a 22-item questionnaire. The piloting phase resulted in 23 items. 74 EAP teachers from both camps (language and content) participated in the final administration. Various factor analyses, internal consistency, and correlation of all of the items were performed. The data obtained confirmed a sufficiently reliable and valid scale, consisting of 6 components (with the same underlying themes of 8 competencies extracted earlier) and 23 items for measuring the EAP teachers' competencies.
