To change the site title, navigate to the site settings page by clicking on the Site Settings tab. This is pictured below.

The site title is the text that is displayed typically at the top of your website. Changing it does not change your website address.

Near the top of the page, you will see a field labeled "Site Title" with a corresponding text box. In the example below, the site title is Ms. Green's 5th grade class.

Change the text to say whatever you would like the title of your website to be. Then press the Enter key, or click "Save Settings," as pictured below.

Once it is saved, your site title will have been changed. Below are before and after pictures.

Before:

After: