We are about half way. The songs, flash cards, app and instructor guide is 4-5 starts. The student workbook is garbage. Don’t buy an extra if you are using this for more than one child. The $18 dollars is better spend on other workbooks such as Explode the Code. You can buy two books with more content for the same price as one learning dynamics studentbook . Also, when I went to return the extra student workbook I ordered the post office told me Learning Dynamics should not be using media mail to mail spiral bound books and charged me extra to mail the book back. I let Learning Dynamics know and they told me the Post Office was WRONG! No offer to refund the extra $ I had to pay. They didn’t say they’d look into it because they don’t want to be cheating the post office.