Restore a deleted class

QUESTION
Yesterday I deleted a class out of my thatquiz account, and then
realized that all of the tests I had created for that class were
deleted as well. I was wondering if there was any way to restore the
quizzes online?

ANSWER
1. Click the "New class" link
2. Click the "Import" button
3. Choose the first option "I want to restore a class which I
previously deleted"
4. Choose the class to restore.
5. Click "Import"