The 51-year-old pleaded no contest to vandalism after clashing with a paparazzo and as a result a charge of battery was dismissed - but in addition to probation, Penn was ordered to attend 36 hours of classes.
He was given top marks for his progress during a hearing in January and Penn has now completed the course, his lawyer told a court on Friday, reported TMZ Online.
However, Penn will remain on probation until next May.
