Is there a way to differentiate the assignments for students in a class period? I would love to be able to assign the texts to students individually based on their Lexile levels.

Yes, there is! First, you can search texts by Lexile. Then you can assign a text to individual students and small groups, which will help with differentiation. 

When you assign a text, you will see an option to assign a text "To one or more individual students." Select this option and a drop-down menu will appear. Select the students to whom you wish to assign a particular text. You can also enable Guided Reading Mode for specific students or groups!

If you want to keep all your assignments within each class, you can also create a class-wide assignment and exempt students who are not assigned that text from the assignment report.

For more information on how to assign texts, see "How do I create an assignment?"

We do not offer one text rewritten at different Lexile levels.