Input (grade 12): While he gave his manuscript to his agent and editor to review, Riordan took his book to a group of 6th, 7th, and 8th graders to read and give their critique.
Output (grade 6): He gave his manuscript to his agent and editor to review. At the same time, he gave the book to some sixth, seventh and eighth graders to read and tell him what was good or bad about it.