We often rely on “assumptive assessment”, assuming if some in our classes understand everyone does. Learn how to address individual student mastery of all grade level standards through efficient, periodic formative assessments. This can be implemented through online formats. Assessments can be taken on any Internet-connected device and take as little as 90 seconds, requiring very minimal time away from rehearsals and normal class activities. Results can be instantaneous and offer the teacher immediate insight into individual and class mastery. This can be a key component of the for quantitative data documentation of student learning growth.