Nick Jonas has graduated from high school.

The 16-year-old Disney pop star announced the news on the Jonas Brothers' Twitter blog.

Nick - who along with his bandmate brothers Kevin and Joe was home schooled - finished two years earlier than the average US high school student.

The youngest of the three brothers, he is last to finish his schooling.

Nick is said to have celebrated in Madrid, Spain, last weekend where he was on a promotional tour.

The musical trio were urged to play an impromptu show outside Britain's Radio One studios in London, attracting hundreds of teenage fans yesterday (15.06.09).

The group performed their song 'Paranoid' as well as a version of Katy Perry song 'Thinking Of You'.

The Jonas Brothers will soon return to the US where they will start a world tour on Friday (19.06.09).