Prince Jackson is a high school graduate.

Michael Jackson's oldest child graduated with honors from Buckley High School in Sherman Oaks, Calif. on Saturday. The graduation also serviced as a mini family reunion for the famous family. Jackson's Aunt La Toya Jackson and his cousin Tito "TJ" Jackson both attended.

"So very proud of @princemjjjaxon. YOU DID! And you did it with Honors!!! #buckleyclassof2015," La Toya tweeted along with sharing a photo of her and the new graduate at the ceremony.

Tito, who was made a co-guardian of Michael's children in 2012, also posted a photo of him posing with the 18-year-old graduate at the ceremony.

"Prince, you have grown into an incredibly special young man. Words can't express how proud I am of you. I will ALWAYS be here to support you wherever life takes you. I love you!" he captioned the post.

"When they announced his name, the whole Jackson family stood up and cheered and whistled," an eyewitness told Us Weekly. "Prince was ecstatic as he crossed the stage and picked up his diploma."

ABC News reported that Prince's 17-year-old sister, Paris Jackson, was spotted giving her big brother a hug after the ceremony. Michael's children, including 13-year-old Blanket Jackson, were all initially homeschooled, but his two oldest children began attending Buckley after moving in with their grandmother, Katherine Jackson, who, by law, is considered a permanent co-guardian.

Buckley High School is the same school Michael and his siblings attended.

 With these crazies! #education

A photo posted by TJ Jackson (@tjjackson9) on May 9, 2015 at 9:06am PDT