12/21/2010 AT 7:55 AM ET
Chris Brown was so proud about finishing his yearlong, court-ordered domestic-violence class that he posted his certificate of completion online on Monday.
“im done with class,” the singer, 21, wrote on Twitter, with a link to a photo of the certificate. He later added another post, reflecting on how he’s changed since being convicted of felony assault against his then-girlfriend Rihanna in February 2009.
“i have enough self respect and decency to be proud of accomplishing this DV class,” Brown wrote. “Boyz run from [their] mistakes. Men learn from them!!!”