Share an Embed Link
The simplest way to share a lesson/assessment with teachers is to get the Embed Link and paste it in a shared document, a shared calendar, an email, etc. Teachers can click the link and the activation screen will open, ready to activate for a class. Click the blue "Preview" button on the Activation screen to view the assessment as a student would.
Embed links are only for activating assessments. Use the Import link (below) if teachers need their own version of the assessment in the "My Assessments" list.