This paper is a report on the development of a digital portfolio system for a teacher education program. The development of the system was based upon a three-year comparative case study of four principals representing rural and urban schools and included pre-kindergarten through 12th grade levels in a Midwestern state. The research generated information to create a computer program to assist undergraduates with the construction of their professional teaching portfolios. As students used the computer program, portfolios were being constructed in many electronic formats. The identification of one accessible electronic system became necessary for student and program evaluation and for accreditation purposes. As a result, a development and a professional portfolio were created within a digital system. The system includes rubrics which connect the standards and the aggregation of data. This paper identifies the research, problem solving process, initiation, and ongoing refinement of a digital portfolio system for use with teacher job search, student evaluation, teacher education program improvement, and aggregation of data for accreditation purposes.