Scott Disick Celebrates Son Mason, 14, Graduating Middle School: ‘My Best Friend in the World’

“Now on to high school,” wrote ‘The Kardashians’ star on Instagram as he posed with his son outside Nobu

Scott Disick is celebrating an important milestone in his eldest son’s life.

On Thursday, June 6, Disick, 41, shared a congratulatory post to celebrate his son Mason Dash, 14, graduating from middle school.

“Congratulations 2 my best friend in the world 🌎 for graduatiuating middle school and now on to high school! Let’s go mart!!,” the proud father wrote as he shared a photo that featured him standing in between Mason and a friend.

In the snap, which appeared to be taken outside Nobu Malibu, Mason and his pal turned their backs to the camera as Disick rested his arms on their shoulders.

Disick, who shares Mason, daughter Penelope Scotland, 11, and son Reign Aston, 9, with his ex Kourney Kardashian Barker, covered his eyes with a pair of black sunglasses as he wore a jacket over a dark gray T-shirt and cargo pants.

Mason, meanwhile, sported a long-sleeved red T-shirt and baggy black pants.

“How is he in high school already? I swear he was just born 😢,” one person commented, while another added, “Go Mase!!! It’s crazy how fast they grow up 🥹😭.”

That same day, Disick also shared a sweet new snap of his daughter Penelope on his Instagram Stories.

“Love u peep,” the father of three wrote across the photo as he carried his little girl, who flashed a peace sign to the camera and pouted her lips.

Disick’s congratulations for Mason come after his eldest child joined Instagram last month.