Some but not all videos may include tags.

There are two kinds of tags.

• Instructional practices tags are related to specific instructional practices and strategies that are being used in a lesson, such as whole-class discussions, small group work, and particular classroom management practices. Many of these tags correspond to the TeachingWorks High-Leverage Practices.
• Common Core State Standards (CCSS) tags are related to the Common Core State Standards in English language arts or mathematics that are being addressed in the instruction in the video.

The tags based on the Common Core State Standards (CCSS) differ from the actual standards. The CCSS comprise a set of learning goals for K-12 students. In contrast, the tags describe what students and teachers are working on together in the classroom in relation to those learning goals. They do not suggest that students have learned specific topics or practices.

The tags are also not evaluative. That is, they do not indicate the quality or integrity with which a specific aspect of content is being taught or learned. They are descriptive markers indicating that a particular aspect of mathematics or English language arts i being worked on by the class, by either teachers or students.