 Following her widespread fame with "Battle Hymn of the Tiger Mother" in 2011, Chua wrote this book with her husband Jed Rubenfeld after observing a more prevalent trend of students from specific ethnic groups achieving better academic results than other ethnic groups.For example, a striking demographic pattern that more Mormon students in Yale are emerging than a couple years ago.According to an interview conducted by Harry Kreisler from the Institute of International Studies, UC Berkeley, the authors explained such phenomenon prompted them to "look further into how those groups perform outside of school, and come to a conclusion that for some reasons, those groups have a tendency to experience most upward social mobility than others."