In recent years, the growth of Internet has reached many organizations. Web sites become an avenue for companies to widen their market and reduce facility cost. This calls for the need to develop websites that are more user-friendly, especially for government-operated sites where a large portion of the population is required to be a user. A case study on the Professional Regulation Commission: Licensure Examination and Registration Information System (PRC: LERIS) was conducted. The Single Usability Metric (SUM) was used to encapsulate the effectiveness, efficiency, and satisfaction score of the said web site. Primarily, this paper presents a framework containing design factors seeking to address different design issues. This paper aims to improve the SUM by implementing the improvements on the design factors. A new design was developed to compare the SUM with the existing website. The increase in the sigma level indicated the evidence of effectiveness of the proposed framework.