No, if your district is not set up to use SSO then you will not be able to add students to your class by using a Class Join Code.
This is not available because an account needs to be created for the student for them to join the class. With SSO, an account is created for the student when they try to sign in for the first time to TechSmart.
Without SSO, accounts are created during the Class creation process or when adding a student manually through the gradebook. Students are added to the class automatically when going through these processes.
Students will see the "Join Class" option on the Classes page but a class created in a district not using SSO will not be provided a Class Join Code.