A/N: Please don't be upset by my rambling imagination. I'm just combining two of my favourite things!

Disclaimer: I don't own Glee, Harry Potter, or any of the songs they sing.

Prologue

The Cast

Finn – Harry Potter

Quinn – Ginny Weasley

Rachel – Hermione Granger

Puck – Draco Malfoy

Kurt – Colin Creevey

Mercedes – Angelina Johnson

Artie – Neville Longbottom

Mike Chang – Seamus Finnigan

Matt Rutherford – Dean Thomas

Brittany – Lavender Brown

Santana – Parvati Patil

Tina – Luna Lovegood

Mr. Schue – Remus Lupin

Emma – Tonks

Mr. Figgins – Dumbledore

Sue Sylvester – Severus Snape

Jacob Ben-Israel – Ron Weasley

A/N 2: I'm ignoring the fact that Will is supposed to be married, and that Emma was engaged to Ken. Yes, I know that it was a major part of Glee the tv show. But at Hogwarts, things are different. Also, they're all the same age, 15-16. Let me know if you think Some characters should be shuffled around!