R&B singer Chris Brown took to Twitter on Tuesday to tell fans he completed domestic violence classes that were part of his sentence for assaulting ex-girlfriend Rihanna and that he was proud of finishing them.

"I have enough self respect and decency to be proud of accomplishing this DV class.. Boyz run from there mistakes.. Men learn from them!!!thx," Brown tweeted.

Earlier on Twitter, he posted a picture of his certificate showing he had completed the course and said, "im done with class".

Brown, 21, pleaded guilty last year to attacking Rihanna during an argument on the eve the Grammy Awards in 2009. He was sentenced to five years of probation, community service and the year-long domestic violence course.

Last month, the Los Angeles judge overseeing Brown's probation praised the singer of hits like "Kiss Kiss" on his progress, telling him that "no one has done a better or more consistent job than you have" in meeting the requirements of probation.