A vast amount of the national college entrance information and a broad range of contents make it more difficult for user to find, collect and compare the data. In this study, we find out how users work to collect, compare data through the usability test and take cognizance of difficulty and requirements on national college entrance information web-site. And then we give the planning for designing national college entrance information web-site through a personalized information architecture(PIA) system. Namely, this paper provides a guideline for designing a user-centric personalized information architecture(PIA) system through the usability test.