“The Journey from Platform Nine and Three-Quarters”
The primary purpose of chapter six of Harry Potter and the Sorcerer’s Stone is to introduce the core group of friends that will help Harry Potter develop into an individual. They are similar to Harry’s adult benefactors that also help him along the way, but their help is usually on a closer, more even footing.
On his way to Hogwarts, Harry meets the Ron, Fred, George, Ginny, Herminone and Neville. He also meets Mrs. Weasly (another adult benefactor). These friends will be there the whole way as Harry develops as an individual.
He also meets Draco Malfoy, Crabbe and Goyle, who will be his adversaries at Hogwarts. We may also note that Harry has his first opportunity to stand up to Draco Malfoy in this chapter as he defends Ron against Draco’s insults. This is an important event in his development. It is the first time he can really make a decision on his own. He can joint the “cool” kids, or stand up for his new friend Ron. Harry Potter’s general unselfishness is something that sets his character apart from the Draco Malfoys of the world (and the Voldemorts).
One other development to briefly mention is the introduction of Dumbledore as a legendary, superhuman figure. This legend continues to build up until it is broken down after Dumbledore’s death.