This document discusses the management of assessment resources in a federated repository to support higher education. It presents the ICOPER Reference Model, which aims to gather best practices for interoperable content and learning outcome-oriented education. The model defines assessment resources, methods, intended learning outcomes and other related concepts. It also describes learner assessment processes and services in the model. Finally, it outlines the ICOPER-assessment application, which allows users to search, import, publish and share assessment resources aligned with learning outcomes across courses and institutions.