Disclaimer: I do not own Harry Potter. Too bad, really.
Harry, Hermione, Ginny, and Ah walked down into the great hall, Hermione in the lead. She walked over to Proffeseur McGonagall and said, "May we please take over the school so that we can run it better?"
Harry froze. That was so dumb. He thought. Surprisingly though, McGonagall said, "Of course! Mr. Potter can be headmaster, even though he is only a second year!" She stood up, conjured a bullhorn, and roared, "ATTENTION STUDENTS! HARRY POTTER WILL BE THE NEW HEADMASTER!" Once ears had stopped ringing, there was a lot of cheering. The Weasley twins threw crates of fireworks into the air, which promptly exploded.
Harry turned to Hermione. "But I don't want to headmaster!"
"Too bad, so sad, now you've got the shivers, RAD!" Hermione said.
"Anywayss, think of all the thingss you can change!" Ah put in. "You can build a public sswimming pool that connectss to the lake by an underwater passsage, you can put giant trampoliness in the great hall, you can have lessonss in the Forbidden Forest and un-forbid it, build a giant sslide off the asstronomy tower into the lake, and need I go on? Thiss will be sso awesome!"
"Good idea!" Harry said. "I will do all of that and more! Together, we will run the best school in the wizarding world!"
As he said that, everyone cheered even louder.