They really do grow up so fast.
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The young man turned 18 this month and will be attending Yonsei University in South Korea.
Obviously she couldn't walk around the campus without fans stopping her.
And when they did, they asked how long she'd be in town.
"I leave today. Today’s the day ... I’m trying not to cry," she said.
She added that it "seems like a great school" and is excited to see her boy blossom in college.
The actress grinned ear-to-ear with pride for her son.
She even stopped and took a photo with fans. Maddox is sure to be one of the most popular students in his class!
On screen, Jolie is about to have a big year with "Maleficent: Mistress of Evil" coming out in October, then "Eternals" next year with Marvel.