SAT review course answer key for teachers.

Last year, Khan Academy switched its SAT review to a digital format.  Before that, they had the course mapped out with lessons, which also included the answer key by broken up by chapter.  Is there a way to access the answer keys?  I want to blend some of those questions into my lesson while having my students complete the digital review.  I could use the answer key, or teachers version, as a reminder of the correct answers and the justification.