Did being a English teacher help with writing The Percy Jackson books?

His son, Haley, is going to college there. While he was there he came up of the idea of Mangus.(Corbett, Sue)

Why did Rick Riordan move to Boston?

He would read out loud to his students and the would give ideas.(Roberson, Jack)

His older son was studying Greek mythology and he would tell story's as bedtime stories and when he ran out he made up Percy Jackson.

(Roberson, Jack)

What inspired Rick Riordan to start the Percy Jackson and the Olympians books?