Bill Weasley starts his first year at Hogwarts – he is sorted into Gryffindor

Timeline Notes

Rowling's statements about the ages of the older Weasley children seem to be inconsistent. However, careful analysis strongly suggests that the only way for all the facts to fit together is if Charlie left Hogwarts in his sixth year to go study dragons in Romania. The Lexicon follows this logic in setting the dates for Bill and Charlie's timelines because it's the only way to rectify all canon sources.