Question: How do I retake the Unit Tests?
Unit tests can only be taken once prior to mastering the unit. After that initial attempt, the unit test becomes unavailable (the button is grayed out). The message next to the button says you must now master the unit by working through the topics individually.
After you have mastered all of the topics in the unit, you can take the unit test again.
On the right sidebar, the "Units you have mastered" section shows you the units where you have demonstrated mastery of all the topics. Click on any of these, and the Unit Test will be available to retake.
EdReady does not require you to retake unit tests. However, some schools require their students to do so.