Mischa Barton to play schoolgirl in new film

London, March 05: Former "OC" actress Mischa Barton will play a schoolgirl in her new movie "Assassination of A High School President".

The movie is set in a Catholic high school where the popular girls join forces with a student newspaper reporter to investigate a case of stolen exam papers, reports thesun.co.uk.

Barton has spent a lot of time at fashion shows recently after running into trouble with the law for drug possession.