The learner-centered paradigm of instruction differs in such fundamental ways from the teacher-centered paradigm that it requires technology to serve very different functions. In 2006, a research team at Indiana University began to work on identifying those functions and published their results in 2008. Subsequently, the team elaborated and refined those functional specifications, which are described herein as the Personalized Integrated Educational System (PIES), a technology system that has not yet been developed to support learner-centered education. The four major functions are recordkeeping for student learning, planning for student learning, instruction for student learning, and assessment for and of student learning. Secondary functions include communication and collaboration, PIES administration, and improvement of PIES. Each of these functions is described in detail, followed by specifications for the system architecture, including interoperability, modularity, and customizability.