Title of poem - Phantom of the Classroom

I've heard of the Phantom of the opera,so have a lot of people too!
But only Mrs. Culbert's class know of the Phantom of the Classroom!

In math he sings to you!
In His'try he came!
The voice which calls to you and makes you through that paper airplane!
And do you day dream?
For you always find......
THE PHANTOM OF THE CLASSROOM is there.....
inside your mind!

He says
Ignore your work with me
our strange duet
for my power over you grows stronger yet!
And though you try to listen to your teacher....
and glance behind.....
THE PHANTOM OF THE CLASSROOM is there....
inside your mind!

(He's there! The phantom of the classroom! Beware! The phantom of the classroom!)

In all your fantasies,
you always knew,
that gum and pencils stick well with glue,
and in this classroom
where we all whine.......
THE PHANTOM OF THE CLASSROOM is there....
inside your mind!

Cristenia a brave student says:
Those you've seen your destruction
draw back in fear
We shout the rude comments
its us they hear...
Your gum and our chair
in one combined....
THE PHANTOM OF THE CLASSROOM is there....
Inside our minds!