This document discusses ensuring the integrity and interoperability of educational usage and social data through a framework to support competency assessment. It proposes SCALA, an extensible web-platform that integrates usage and social data from different learning tools using the IMS Caliper Measurement Framework to provide enriched rubrics for competency assessment. SCALA aims to make competency assessment more objective, scalable, and able to uncover latent skills by analyzing integrated educational and context data.