There may be specific text you are looking for in the School/District Library that you are going to assign to you class. You can assign these text directly from the School/District Library.
STEP 1: Find the content you'd like, and click "assign"
Step 2: Select the class you would like to assign the text to and click "assign"
Your text has been assigned!
You can also assign directly from the cover tile
STEP 1: Find the text you want to assign and click on the "+" icon
STEP 2: Select the class you want to assign it to and click "assign"