This is Planet Money from NPR.

By now, college campuses across the country have wrapped up another round of sorority rush.

You may have heard of sorority rush because it's made a splash on TikTok for the last

couple of years.

Rush is when sororities recruit new members, and it's this jam-packed week of parties

and other events.

Hey y'all, so today's the first round of sisterhood and I'm so excited because we get

through our key little dresses.

Hashtag Rush Talk started with sorority women at the University of Alabama.

They were posting behind-the-scenes videos and everything from their daily outfits.

To the songs and rituals that take place during the week.

The TikTok posts gave a glimpse into this particular aspect of campus culture, and they

inspired discussion about social hierarchies and elitism and the role of the Greek system

in college life.

But, you know what didn't get talked about is economics.

And that's where we come in, because it turns out sorority rush illustrates a concept called

matching markets.

And matching markets are hugely important to the economy.

They help pair hospitals with medical residents and organ donors with transplant recipients.

Hello and welcome to Planet Money.

I'm Whalen Wong.

And I'm Adrienne Ma.

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