I've only had this product for a week but I will say that the pages are NOT perforated, like stated. Also the paper is terrible quality compared to other companies. I cannot speak for the quality of the lessons because we haven't started just yet. I had to take the student workbooks to Staples and pay them to unbind the book so I didn't have to RIP the pages out daily.
Very easy to follow and it mixes up the lessons so the student doesn't get bored. My child doesn't like to do things over and over again, so it is perfect for us. If you want to hit a subject until it is mastered, this is not the book for you.