1. The document summarizes a study that investigated teachers' understanding of the IMS Learning Design specification after a brief introduction. 21 teachers from 10 European countries participated in workshops where they were introduced to IMS LD elements and used an authoring tool. 2. In the study, teachers were given a scenario and task to model using IMS LD. Their solutions were analyzed and scored against a prototype. On average, solutions had 78% conformity with the prototype. 3. The study found teachers were able to complete moderately complex design tasks with IMS LD after a short introduction. However, some elements like role-parts and conditional activities posed conceptual difficulties for some teachers.