User blog comment:SayuriDarling/The Mark of Athena Official Discussion/@comment-7594114-20130402145059/@comment-1515612-20130404143855

Why are you making this SO HARD?!

The Lightning Theif - 6th - 12

The Sea of Monsters - 7th - 13

The Titan's Curse - 8th - 14

The Battle of the Labyrinth - Freshman 9th - 14-15

The Last Olympian - 10th grader if the world doesn't end - 15-16