You'll often want to filter your students based on the course they're enrolled in, so you can perform bulk operations such as Delete, Export to CSV, Post to Webhook, Add or Remove a Tag or Send a Broadcast Email.
To do that, make sure you're in your administrator account, and then click on the Students link in your left column, and you'll see something like this:
Look to the left column and click on the Course filter button:
Select the course you wish to use as your filter from the droplist that appears once you click on the Course button, close the list and click the Apply button.
Once you have your filtered list of students, you can perform bulk operations such as Delete, Export to CSV, Post to Webhook, Add or Remove a Tag, or Send a Broadcast Email.