NJ Mom,

That is SO frustrating. My DD had the same experience. She would finish the book day 1, not be able to participate meaningfully in discussion b/c she already knew that outcome, and have lost interest and moved on by the time the group finished the book. All the while, I'm being told that she was with appropriate academic peers....

BTW, if your DS is looking for something when he finishes Percy Jackson series, you might try Erin Hunter's Warriors books. They have been a huge hit with both DS7 and DD9 (although unlike the HP or the PJ books, I can't personally say that I've read them...).