one of the Metric Profiles defined in the 1EdTech Caliper Standard. The Caliper Survey Profile provides a vocabulary for describing events associated with a respondent's participation in online surveys. A key use case involves instrumenting platforms that offer online surveys that explore the student learning experience, student engagement, learning activities, learning progress, and learning performance. The profile models a person–typically a respondent or a rater—participating in a survey in order to provide feedback on their learning and academic experiences.