Ravenclaws. What you know and what you don't.
Okay, so as everybody knows, Ravenclaws are the most awesome students of all! Here's some fun-facts about your fellow housemates.
Cho Chang
Cho Chang is a student one year older than Harry Potter. She dated Cedric Diggory, a good looking Hufflepuff, before he got murdered by Lord Voldemort during the Triwizard Tournament. Cho and Harry date in Harry's 5th year, Cho's 6th year.
Roger Davis
Roger Davis is a two years older than Harry Potter. He goes to the Yule Ball with the part-veela, Fleur Delacour. Later he dates Cho Chang, after Cedric's death.