I have 4 kids using this. I LOVE that I pay one price and all 4 of them can use it together. I have a 4th grader who is still doing the 3rd grade level. I also have a 2nd grader, a kindergartener and a preschooler all loving the program. I LOVE the manipulatives in the program, it is very hands on and they can truly visualize the math. I highly recommend it.