Zac Efron is going back to school!
Sorta.
While Zac was promoting Neighbors 2: Sorority Rising, we decided to test his and his costars' knowledge of all things college.
From guessing the year red Solo cups were invented to the school that gave us beer pong, we're playing Neighborology with Zac, Seth Rogen, Rose Byrne and the Neighbors newbies Chloë Grace Moretz, Kiersey Clemons and Beanie Feldstein.
What's the big prize for the winners? Watch the videos to find out.
Neighbors 2 centers around a sorority that has moved in next door to the Radners (Rogen and Byrne).
The couple enlists the help of their old nemesis Teddy Sanders (Efron) to try to get the sorority evicted before they sell their home.
The raunchy flick's cast also includes Selena Gomez, Dave Franco, Ike Barinholtz, Christopher Mintz-Plasse and Jerrod Carmichael.
Neighbors 2: Sorority Rising is theaters on Friday, May 20.
And E! News will be at the movie's big premiere tonight in L.A. Check back here later on and watch E! News tomorrow night at 7 p.m. and 11 p.m. for all of our exclusive red carpet scoop.