Katy Perry concert at Lakewood High School today, see it on Good Morning America & 7NEWS Now

LAKEWOOD, Colo. - Students are in place and they're waiting for singer Katy Perry's concert at Lakewood High School this morning.

It's a concert that will be broadcast in its entirety on Good Morning America and seen in parts, live, on 7NEWS Now starting at 4:30 a.m.

Perry picked Lakewood High School as the winner of a lip dub contest featuring her hit song, "Roar." A lip dub combines lip syncing and audio dubbing.

Lakewood High School's mascot is the tigers, so the idea of making a video to the name "Roar" seemed appropriate.

"For me, Lakewood really embodied a whole school spirit," Perry said when she picked the contest winner last week. "I think they brought everyone together and you saw so many different people coming together to do one shot."

More than 2,000 students from 80 different school clubs were involved in Lakewood High School's entry.

"It was so incredibly crafted," Perry said. "The clubs, the cliques, they all came together and did their own individual thing, but it was so interesting and well done and well organized."

Perry was impressed that so many kids at Lakewood High came together "to roar."

"That is what this competition embodies," Perry said.

Students at Lakewood told 7NEWS that they practiced several times before the big day because it had to be done in a single take.

"We had two weeks to plan, essentially one week and one week of rehearsal. So every single day of that week, I was walking through the school, I had my phone to my ear, listening to the song, walking through pacing of where everyone would be, taping the ground where each club would end. It took a lot of work," said Courtney Coddington, Lakewood's student body president and the one who rallied her school to make the video. "In two days of having the sign up sheet online for the clubs to sign up, we had 80 clubs and teams sign up. It was nuts -- 98 percent of the student body took part in the video."

After seeing the video last month, Perry Tweeted, "Oh my GAWD. Now this is what I call school SPIRIT: http://vimeo.com/75058173  I hear you roaring LAKEWOOD HIGH!"

Lakewood High School has 2,039 students. The school is perennially ranked by 5280 Magazine as one of the top high schools in the metro area, according to JeffCo Schools.

"Our school, as far as I've seen,  has always had the greatest amount of school spirit that I've ever seen. We're such a family. It sounds cheesy but it's true," said student Raleigh Fairchild. "We don't have lots of problems, like bullying and other things that would divide a school and so we're really good about being all-inclusive because we support each other. Every group will support every other group. The football players will support the band and the cheerleaders will support academics."

Crews spent several days transforming the school's gym into a TV studio and concert hall.

"Were starting to build, to build the stage and the lighting is starting to come.  Not only are we putting on a great music performance, we are also putting on a TV show, so it's having those two things come together," said Kyle Morris, production manager for Good Morning America.

The concert is for Lakewood High School students only. The general public will not be allowed in.

The school had wanted the concert to be held in a larger venue, as a fundraiser for flood relief, but that is no longer in the plans. After the concert Lakewood students will be selling "One World One Roar" T-shirts to help Colorado food victims.

Lakewood is also asking other schools across the country to participate in a separate charity campaign for their own causes.

"We want to challenge all the high schools in America to raise a $1,000 so there are 39,000 schools in America, so we want to raise $39 million," Coddington said.

Principal Ron Castagna couldn't be more proud of his students.

 "Students have made this about not just winning a concert, but sending a message, and trying to unite all students throughout the country, to show there is a common good," Castagna said.

Watch Lakewood High School's video below or here: http://vimeo.com/75058173

Be sure to tune into 7NEWS Now and Good Morning America on Friday, beginning at 4:30 a.m.. We'll have  exclusive, live video from inside the gym and will broadcast the concert in its entirety.  Friday also happens to be Perry's 29th birthday.