It's crunch time for the students in AP Economics at San Marcos High School.

They aren't cramming for a test or preparing for a paper, but getting ready for the Kids Helping Kids annual benefit concert.

"Our goal is $250,000, which is pretty crazy that a group of high school students can raise a quarter of a million dollars in 16 weeks," said Carter Hudson, the Kids Helping Kids CEO.

The students have been working all school year for this. Headlining the big event is Andy Grammer, who is famous for songs like "Keep Your Head Up," and "Fine By Me."

"And then Tim Lopez, who is actually a San Marcos alum, will be opening. He's from the Plain White T's," said Hudson.

Everything that goes into the concert, including booking the artist, is done by the teens.

It comes as a surprise to some.

"One of my favorite stories to tell is when I got a call from Sony Records and said, 'We're really interested in talking with a Caitlin,' who is our head of artist relations. And I said, 'I'm sorry, you can't talk to Caitlin right now because she's in Spanish. But if you call back in about an hour, then she'll be ready.' And it's hard for some people to grasp that they are 17-year-olds on the other side of that phone," said Kids Helping Kids teacher Jamie DeVries.

It's not just music that will help raise money for the student-run non-profit, there will be a silent and live auction.

Some gift baskets include wine, movies and even a basketball signed by Michael Jordan.

The main item for the live auction is sure to bring in thousands of dollars.

"We have a package from Caesars and it's three nights' stay at Caesars with a meet-and-greet and show with either Elton John, Shania Twain or Celine Dion. So they get to chose who they'd like to meet and see the show for," said Madeline Frohling, the Kids Helping Kids auction coordinator.

The students are expecting a packed house at the theater on Jan. 11.

For ticket information click here or call 805-899-2222.

For Mini Cooper raffle tickets, click here.