When creating a post, if you select individual recipients instead of the entire class, the post will not appear on the Class Feed. Instead, it will be visible in the "All Groups" feed. To ensure your post appears on the Class Feed, select "All Roles" when creating your post.

For a visual guide on how class updates and posts work on Bloomz, you can watch this video:

https://www.youtube.com/watch?v=04DwfUE7l10