Hello @andrewbaker
Thank you for contacting the Canvas Community. We're sorry to hear you've been experiencing issues with sending an announcement to students only. You can do this by going to your inbox and sending a message. There is an option for students - "all in students", teachers, all, etc.
Here is the Canvas guide:
https://community.canvaslms.com/t5/Instructor-Guide/How-do-I-send-a-message-to-all-course-users-in-t...
Hopefully this helps!
