You are sorted into a house based on what you value, not the traits you posses. Percy valued the Gryffindor traits and therefore was sorted into Gryffindor. But he (harrypotter.wikia.com/wiki/Percy WEASLEY) was also very brave, especially when he decided to come back to his family and during the battle of Hogwarts.
It was confirmed on Pottermore that Hermione was also a bit of a Hatstall, as the Sorting Hat saw the potential for her to be both Ravenclaw and Gryffindor. In the end, Gryffindor won out, and it's possible that Hermione wanted to be seen for being brave more than for her intelligence.
However, Percy's rise through the Ministry caused a rift between him and his family following the return of Lord Voldemort. His father thought that his promotion to Minister for Magic Cornelius Fudge's office was a plot by the Minister to keep tabs on the Weasleys, and through them, Albus Dumbledore.
Percy proved himself to be very much of a social climber. He wanted to achieve prominence at the Ministry, choosing to dedicate himself to the institution and abandoning his family when they chose to rebel against the Ministry.
Penelope 'Penny' Clearwater (born c. 1975 or 1976) was a witch and Ravenclaw student at Hogwarts School of Witchcraft and Wizardry from 1987 to 1994. In her later school years, she was a Prefect, and eventually started dating Percy Weasley, a Gryffindor student and a fellow Prefect.
She survived the war and eventually married a muggle Mr. Campbell and had a daughter named Erin. Even though Cho seemed very innocent and kind, she still couldn't get over the fact that Cedric Diggory was dead and Harry Potter, her new crush, had been right beside Cedric when he died.
Being a prefect didn't guarantee a student to become a Head Boy or Girl. In fact, the Head Boy or Girl did not have to have been a prefect at all. The Weasley family was noted for having had several prefects among its sons — first Bill, then Charlie, then Percy, and finally Ron.
After all, there really wasn't any reason left for Percy to consider his family to be in the wrong, not when they had been proven to be right all along. This comes down to Percy's extreme pride, which left his family feeling estranged and resentful toward him.
Percy is an introvert, in a very extroverted family. He is very rule-oriented, mature in many ways and naïve in others, a bit socially awkward, and tends to hyper-focus. These are fairly classing signs of Autism, particularly in males.
The only member of the Weasley family to truly represent anything actually deep-down bad was Percy Weasley. Despite being surrounded by quite a cool family, he ended up being a pompous, arrogant snob who wanted nothing more than the utmost respect and power.
Due to his humiliation in the Triwizard Tournament, Cedric eventually becomes a Death Eater and kills Neville Longbottom. Due to Neville's death, the final Horcrux Nagini was never destroyed, and as a result Voldemort is never defeated, kills Harry and takes over the Wizarding World.
You are sorted into a house based on what you value, not the traits you posses. Percy valued the Gryffindor traits and therefore was sorted into Gryffindor.
When the mystery is revealed, though, it all seems trivial: it turns out that Percy has been dating a Ravenclaw prefect named Penelope Clearwater. Ginny caught them kissing and Percy swore her to secrecy.
Draco Malfoy was sorted into Slytherin House at Hogwarts School of Witchcraft and Wizardry. This was in line with his family's strong belief in the importance of blood purity, a characteristic trait of Slytherin house.
He actually asked the Sorting Hat to place him in Hufflepuff, as he was intimidated by Gryffindor's reputation for bravery, but the Sorting Hat didn't agree. They debated it for so long, that he was close to being what is known as a Hatstall, which is a term for any student whose Sorting takes longer than five minutes.
Luna Lovegood, from J.K. Rowling's beloved Harry Potter series, is a dreamy example of inattentive ADHD. Even when captured by members of the Inquisitorial Squad, she stares out the window, distracted. Because of her spacey demeanor and blunt honesty, she sometimes has trouble making friends.
The portrayal of Ron does a very good job of explaining what it would feel like to live with specific phobia and for the audience presents many realistic ideas about Arachnophobia. The books give good examples about what is going on with Ron's anxiety about the spiders and why he reacts to them in the way he does.
Annabeth Jackson (Nee Chase) is the demigod daughter of Athena and Frederick Chase. She is the girlfriend and later on wife to Percy Jackson, and the mother to four kids: Cast, Ethan, Zoe and Violet Jackson. She is currently working as an architect.
Percy is a twelve-year-old boy who has had difficulty in school. He feels like his teachers dislike him and want to see him fail. Percy has ADHD and dyslexia, and he often feels frustrated about these disabilities and their effects on his life in and out of school.
He refused to believe his father and gave his loyalty to the Ministry, so much so that when Voldemort returned and the Ministry refused to accept it, Percy steadfastly toed the 'Voldemort is not back' line.
The once shy and awkward Neville Longbottom showed his true bravery during the battle of Hogwarts and eventually became the head of Gryffindor House while also teaching new students Herbology, his favorite subject.
In Harry Potter and the Order of the Phoenix, Draco is named a Slytherin prefect along with Pansy Parkinson. He gets Harry and the Weasley twins banned from the Gryffindor Quidditch team when they attack him during a postmatch brawl after Draco insults their families following Gryffindor's win over Slytherin.
