"Hi everyone! I'm busy studying at @FIDM but I want to say I love you to my fans! Xoxo Amanda," Bynes wrote.
Her Twitter account has been updated as well, labeling her a "Fashion Student." Her profile is now nondescript and many of her old tweets have been removed.
The “Easy A” star has been attending the Fashion Institute of Design and Merchandising in Orange County part time.
Hi everyone! I'm busy studying at @FIDM but I want to say I love you to my fans! Xoxo Amanda— amanda bynes (@amandabynes) March 1, 2014
A source told E! News of her return to school, "She was very nice, friendly and chatting with her classmates," adding, "originally going to be a fashion design major but has now decided to pursue merchandise product development."
Amanda, 27, has made huge strides since being placed on a 5150 involuntary psych hold in July and completing rehab treatment in September.
Bynes’ mom Lynn will remain in control of her health and finances as the former Nickelodeon star moves forward with her life.