CLAS, or Collaborative Learning Annotation System, is a web-based application developed by the Faculty of Arts (Arts ISIT) at UBC. CLAS allows students to add time-based annotations and comments on videos, images, and documents, creating opportunities for peer review, self-reflection, and collaborative learning.

To access CLAS media, students and instructors can log in to CLAS at

Key features

CLAS offers several features that allow for collaboration with a variety of content and media. These features include:

  • Uploading media: CLAS allows you to upload media from your computer as well as media stored on the web (e.g., YouTube). Click here to learn about uploading media.
  • Sharing media: After you upload your media, you can access it through the My Private Media tab. The media will initially be set to private, but you can select who you would like to share the media with. Click here to learn more about sharing media.
  • Adding annotations: Students can collaboratively add annotations to images, PDFs, and time-based annotations on media and videos. Click here to learn about adding annotations.
  • Organizing media using playlists: Use playlists to organize your media and create a more streamlined environment for students, allowing for easier navigation. Click here to learn more about organizing your media using playlists.
  • Creating assignments: Students can work on assignments created on CLAS and submit their work in a private hand-in-box on CLAS. Media assigned to assignment hand-in-boxes can only be accessed by the student who submitted the assignment, the instructor, and the TAs. Click here to learn more about creating assignments.
  • Assigning students to groups: Facilitate discussions, activities, and collaboration by breaking students into groups. Media assigned to a group is only visible to the group members, instructors and TAs. Click here to learn more about groups.
  • Embedding CLAS: You can embed CLAS in Canvas or UBC Blogs allowing students to access CLAS and other course materials all from the same place. Click here to learn more about embedding CLAS.
Submitting a request

Instructors who wish to use CLAS can contact Science LT Support at Please include the following information in your email:

  • Course number and section
  • Instructor CWL username (no passwords)
  • TA CWL username (now passwords)

Instructors can also request for a sandbox site to explore the features in CLAS before deciding whether to use it for their course(s).

Last updated on: September 23, 2020

Learning technology support

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