This course is designed to be the second high school chemistry course that a student takes. In order to take this course, then, the student must already have had one year of high school chemistry. When added to that first year course, this course "fills in the gaps," giving the student the equivalent of the first year Sonlight resource: https://www.sonlight.com/products/apologia-advanced-chemistry-set-student-text-and-answer-key-set