Answer: Literably supports single sign-on (SSO) with Clever and ClassLink.
Clever: If you are rostering with Clever, Literably supports Clever SSO on both the web version and the iOS version.
Once your district is connected with Clever, there is no additional setup process required for students (or teachers). Students can simply click the "Log In with Clever" button on their Literably login screen to start their assessment. Some districts instruct students to log into Literably via a Clever portal found on the district's website - and that works too.
This Clever Help Center article has more information about setting up your SSO.
ClassLink: If you are rostering with ClassLink, Literably supports ClassLink SSO on both the web version and the iOS version. If you are interested in using ClassLink, please contact Literably at firstname.lastname@example.org.