Teen sensation Justin Bieber has performed a free concert at a New York school.

The 16-year-old singer's concert was the top prize in the KISS 98.5 School Spirit contest. Students of the local school that collected the most pennies for Women & Children's Hospital of Buffalo, west NY, were rewarded with a concert.

And it was the students of Edward Town Middle School who got to see Bieber in action.

The 935 students of the school in Sanborn won the contest by raising $16,927 - some $2300 more than the second-place school.

The contest raised $152,000 for Women & Children's Hospital of Buffalo - that's 15.2 million pennies, or 41 tons of the copper coins.

As soon as Bieber was announced as the star who would do the concert for the winning school, Bieber fever swept Edward Town Middle School.

At that point Principal Laura Palka had never heard of Justin Bieber, adding: "But I knew the kids were extremely excited and I knew it was for a good cause, so why not?

"We had penny cans everywhere! At our dances we had a life-sized photo of Justin, and the kids could pay to have their picture taken with Justin - that was a very large hit."

The groundwork for Bieber's appearance was laid almost a year ago, when the radio station got a call from his manager, Scooter Braun, asking if the rising teen star, a native of Stratford, Ontario, could stop by the KISS studio.

After the radio show appearance Bieber, his manager and also his mentor Usher agreed to the free concert to help raise money for charity.