How does the curriculum work?

Each of our middle school classes have been divided into four unit studies. Each unit study is designed to be completed in 9 weeks. Use all four for full year-long curriculum. Each lesson includes two half-hour audio lessons, assignments, study guides, and unit exam.
Students can listen to the lessons as many times as they need and parents are free to assign the homework best suited to their students. Parents have full control of the course: timing, assignments, exams and grading.
Each purchase is for a one year subscription, which can be shared by multiple students in the same family.