Exclusive | Meet the Basement Girls who run college sorority rushs secret power structure: We are the puppeteers of rush week

It’s 1 a.m.in Tuscaloosa, Ala.

and a coven of barely legal coeds are divining the fates of their peers in the basement of a sorority mansion.They pore over data sheets, interview notes and custom-made “grading” software that ranks wannabe sorority sisters in a carefully calibrated scoring system.They cross-reference the social media channels of 17-year-old girls, swiping through grids of tanned, smiling teens on Instagram and TikTok.And then with a nod from their leader, they wordlessly delete the “bottom girls” who won’t make the coveted sorority’s final cut — even though they’ve never even met them.Welcome to the world of the “Basement Girls,” a secret society of young women who eat data for breakfast like Pop Tarts, and lounge in Parke sweatshirts and Uggs while their sisters are upstairs performing wildly acrobatic dances for potential recruits — and of course, for TikTok viewers — wearing corset tops, heels and more makeup than an Ulta Beauty kiosk.The silent power imbued in these Basement Girls makes it a coveted gig, said Olivia Bourgeois, a former sorority girl at the University of South Alabama.The social media executive now makes TikTok videos explaining the behind-the-scenes of rush to sorority hopefuls.“You got to know everything that was going on,” she told The Post, including “what every conversation was about, who was talking to which [girl], the results of the voting.”Bourgeois explained that during a typical sorority rush, most collegiate members are the “floor girls,” tasked with making their chapter look the most exclusive (or at least, the most fun and popular) to potential new members and TikTok swipers alike.But it’s the Basement Girls, those hidden from the prying eyes of Instagram, that select the recruits of the country’s most exclusive sororities.These groups teem with young women who are hand-selected for their brains and social know-how to manipulate every move of a collegiate hopeful’s rush e...