SpacesEDU gives you several ways to provide meaningful feedback on student posts directly from your Class Feed — whether through written comments, audio or video responses, annotations on PDFs, or quick reactions. This article walks you through each option.

Teachers can also control who has access to see, react to, and comment on student posts. Read more about adjusting these settings here: How can I update Space settings?.

Commenting on Posts

Once students add posts to a Class, you can provide feedback using the Add Comment field. You have several options for how you want to comment, including text, audio, video, and links and files from your device storage or Google Drive.

Annotating PDFs

• If a student has attached a PDF to their post, you can also provide visual, in-context feedback using our native annotation tools. Simply click on the PDF file, then click **Annotate **at the top right.
• Add your drawings, highlights, or text notes, and click Save. Because you are annotating a post that has already been published, your drawings and notes will not change the original file. Instead, your annotated version will automatically be added as an additional file inside a new comment on the post!
• Learn more about annotating documents here.

Comment Threads

• Once the first comment is added, you can reply to a specific comment, creating a comment thread, or you can add a new comment.

Tip: When tapping a comment notification on a mobile device, you will be taken to the original post first to provide better context, rather than dropping directly into an isolated threaded comment.

• In Class Spaces, students can see each other's posts by default. To change this, check out our article How can I update Space settings?.

All posts will appear in your Feed, regardless of whether they are Class posts, Group Space Posts or 1:1 Space posts. You can tell which posts are for which Spaces by the coloured label in the top right of the post:

Comments and rich media are just the start of engaging your students in SpacesEDU. Sometimes you might want a quicker and more open-ended form of feedback, or you may prefer a more structured process:

• Looking for an even simpler way to engage with your students' posts? Check out how to enable and add Reactions.
• Want to provide a detailed assignment with options for deadlines and embedded feedback? Take a look at Activities.

Auto-Draft Comments

Comments on posts save automatically so teachers, students, and families can pick up right where they left off — anytime. Just head back to the post you were commenting on, and it will be right there waiting for you.

Still have questions or any feedback to share? Open a chat in the bottom left corner of your screen!

Updated on: 05/05/2026