This program doesn't list by age but based on the level of the booklet compared to the other booklets my son works from I would guess 5th or 6th grade. My son is going into the 8th and it is work he has already mastered so the booklet is new and untouched. It came with some other booklets I ordered from ebay. Hope this helps./
ACE has a great program, my nephew went on to actually sell some of his drawings that he learned. I hate to see any workbook go to waste. We work so hard to educate our kids, it's expensive - but he'll need a good job so he won't have to put mom in a home someday! LOL