" … are to be studied before you take the quiz"?

[Odessa Dawn]

All 8 lessons of the Advanced 1 Grammar are to be studied before you take the quiz. There is a single review question at the end of each lesson.

I don’t understand the above exchange. I give it a try below:

Having completed/studied all eight lessons, there will be a comprehensive exam.

 

[teechar]

"are to be" = "must be"
Therefore, it means:
"You must study all of the eight lessons in Advanced 1 Grammar before you take the quiz".

"At the end of each one of the eight lessons, there is a single review question (to help you check how well you understood the lesson)".
;-)