The proficiency assessment comes from each assessment as each of it is tagged and built to test specific competencies. Every time a learner learns a lesson/competency, an assessment tests the proficiency/mastery.
If the learner scores the requisite mastery score in the assessment (as decided by the partner in their tenancy, otherwise usually default at 80%), the competency turns dark blue in the learner proficiency graph and helps in locating the skyline.
If the learner scores less than the requisite score, the system can surface a reroute suggestion that brings up another set of learning content for the same competency.