The door swung open at once. A tall, black-haired witch in emerald-green robes stood there. She had a very stern face and Harry's first thought was that this was not someone to cross.
"The firs' years, Professor McGonagall," said Hagrid.
"Thank you, Hagrid. I will take them from here."
She pulled the door wide. The entrance hall was so big you could have fit the whole of the Dursleys' house in it. The stone walls were lit with flaming torches like the ones at Gringotts, the ceiling was too high to make out, and a magnificent marble staircase facing them led to the upper floors.
They followed Professor McGonagall across the flagged stone floor. Harry could hear the drone of hundreds of voices from a doorway to the right -the rest of the…show more content… Harry nervously tried to flatten his hair.
"I shall return when we are ready for you," said Professor McGonagall. "Please wait quietly."
She left the chamber. Harry swallowed.
"How exactly do they sort us into houses?" he asked Ron.
"Some sort of test, I think. Fred said it hurts a lot, but I think he was joking."
Harry's heart gave a horrible jolt. A test? In front of the whole school? But he didn't know any magic yet -- what on earth would he have to do? He hadn't expected something like this the moment they arrived. He looked around anxiously and saw that everyone else looked terrified, too. No one was talking much except Hermione Granger, who was whispering very fast about all the spells she'd learned and wondering which one she'd need. Harry tried hard not to listen to her. He'd never been more nervous, never, not even when he'd had to take a school report home to the Dursleys saying that he'd somehow turned his teacher's wig blue. He kept his eyes fixed on the door. Any second now, Professor McGonagall would come back and lead him to his doom.
Then something happened that made him jump about a foot in the air -- several people behind him screamed.
"What the --?"
He gasped. So did the people around him. About twenty ghosts had just streamed through the back wall. Pearly-white and slightly transparent, they glided across the room talking to one another and hardly glancing at the first years. They seemed