Luna went in a carriage on her own in the Hogwarts express and when she came off she saw some fleshless horses, with dragonish heads and winds. No-one else could see them and she later found out why- they were thestrals and the only people who can see thestrals, are people who have seen death; Luna's mother had died so she could see them. She came into Hogwarts and put the sorting hat on her head. It thought about putting her on Hufflepuff, but decided on Ravenclaw. Everyone she met thought she was weird, so she didn't have many friends for her first few years, but she didn't mind, as she was always in her own world. Luna was always quite good at school and one of the cleverest in her class.
Before she went to school in her third year, she and her dad went to the quidditch world cup final but after it had finished the dark mark-voldermorts sign- was seen in the air for the first time in 14 years, which made people scared.
When she got to school, she chose care of magical creatures, divination, and ancient runes to study; it is unknown if she took anything else. At the end of her third year Dumbledore, the headteacher at Hogwarts, told everyone that Voldemort was back and that Harry Potter has fought him. Her and her dad believed them, even though barely anyone else did.