This document summarizes the goals and progress of a project to develop an online diagnostic assessment system in Hungary. The project is led by the Center for Research on Learning and Instruction at the University of Szeged and has received funding from the Hungarian Development Agency. The first phase involved developing frameworks and item banks for reading, mathematics, and science. The second phase will expand the system's reach to 20% of students and integrate it more fully into schools. Ultimately, the system aims to serve 600,000 students, communicate with 60,000 teachers, and provide sophisticated feedback to help personalize learning.