Reese Witherspoon was on campus to speak at an event for the Stanford Graduate School of Business

Credit: Reese Witherspoon/Instagram

While most college students are packing up their dorm rooms for summer, Reese Witherspoon is heading back to school for a visit.

The actress, 41, stopped by her old stomping grounds in Stanford University on Saturday and surprised a lucky college student while checking out the dorm room she used to call hers.

“Surprise! While re-visiting @Stanford, I popped by my old dorm room…. and met its newest tenant, Caitlyn!” Witherspoon captioned an Instagram photo. “She was so nice; she even welcomed me in!”

The Oscar winner was on campus to speak at an event for the Stanford Graduate School of Business.

“Thank you @stanfordbusiness for having me yesterday,” she posted on Friday. “It was a honor to share my experiences and chat with all of you bright minds. Keep studying hard and dreaming big!”

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Although the Big Little Lies star dropped out of Stanford to pursue acting, it may not be long before her look-alike daughter Ava Phillippe, 17, packs up for college.

Witherspoon recently spoke with Conan O’Brien about what it’s like raising teenagers.

“My daughter [Ava] said the other day, ‘It’s like we look like dad [Ryan Phillippe], but we get our weirdness from you,’ ” she said. “But I’m goofy. I send them weird Snapchats of me doing old man voices and goofy teeth. That’s the way we communicate.”