This document discusses developing an online assessment of digital competence for Estonian students based on an Evidence-Centered Design (ECD) framework. It involves two university teams combining deductive and inductive approaches to build an assessment aligned with the DigComp framework and Estonian curriculum. The ECD framework layers assessment from domain analysis to implementation. A Bayesian network and practical tasks are proposed to assess knowledge, skills, and abilities. Piloting is planned in schools to test scenario-based tasks and Bayesian scoring.