I need help with te nameof a book series...?

I once read this book that was the beginning of a series meant for younger teens and I want to buy the series for my neice. The only problem is I cant remember what its called. I know it was about these three girls that were the daughters of Zeus and he banished them to earth for pulling a prank on his wife. He meant to send them to Athens, Greece but ended up sending them to Athens, Georgia instead. They have to attend high school and fend for themselves until they learn their lesson. The main character was named Thalia and I know one of her sisters names starts with a P. Please help me, I know I couldn't have been the only person to read this book.