Leadership abilities have been accounted to the organizational success. Self-efficacy is the keystone of leadership because this is the leader’s belief to the ability to perform a specific leadership task effectively. Thus, this study aimed to develop an evaluation tool that could measure academic leader’s self-efficacy. In particular, the study was conducted to identify the underlying dimensions; establish its parsimonious fit; and determine the scale’s reliability. Preliminary test of the construct was performed. The factor structure of the instrument was derived and examined, and the psychometric property was assessed. Quantitative exploratory factor analysis research design was utilized. A 29– item try-out form was created based from the literature review and informal interview. A total of 450 department heads, subject coordinators and teachers in public secondary high school in Region XI participated in the survey. The results of the exploratory factor analysis revealed two underlying dimensions namely: leader-follower relationship and personal competence. This derived two-factor model with six items exhibited parsimonious fit which comprised the final version of the scale. Moreover, the overall and individual scales of the instrument had good internal consistency reliability coefficients supporting that the scale was highly consistent in measuring the constructs defined by the scale. The final version of the academic leader’s self-efficacy scale was a valid and reliable tool that was tailored to a particular domain of functions for Filipino academic leaders.
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