This is one place we never expected to see pictures of Kim Kardashian’s behind: in SAT test-prep questions.

Earlier this week, test preparation company Catalyst tweeted a photo of Kim Kardashian’s famous photos from Paper magazine with math questions on it. According to Catalyst founder and CEO Jared Friedland, the math questions involve “three types of circle questions that the SAT asks over and over again,” he told The Huffington Post over the phone.

The company tweeted:

As patriotic, pop-culturally-minded Americans, we couldn’t help but see Kim Kardashian’s recent photos as an opportunity to teach SAT math.

— Catalyst Prep (@CatalystPrep) November 20, 2014

#KimKardashian #SAT #math pic.twitter.com/SHpOw3KEvh

— Catalyst Prep (@CatalystPrep) November 20, 2014

#KimKardashian #SAT #math pic.twitter.com/E0u85CQPa9

— Catalyst Prep (@CatalystPrep) November 20, 2014

#KimKardashian #SAT #math pic.twitter.com/9DAoa9gxPZ

— Catalyst Prep (@CatalystPrep) November 20, 2014

Friedland told The Huffington Post that the company, which helps prepare students for the SATs and ACTs, tries to use “pop culture and humor to relay important strategies to students. Most other test prep companies take it as a given that if you’re preparing for the SATs or GRE it’s going to be a boring endeavor. We reject that notion.”

While the tweets have since gained attention around the web, Friedland said, “This tweet was something we did on a lark. We, like many Americans, were checking out the photo shoot and the spread.”

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