The exterior shots of Kim Tan's school were done at The University of Redlands in Redlands, California.
Ji-won Kim and Krystal Jung previously starred together in High Kick 3
The opening surf scene was filmed in Huntington Beach, California. The famous HB pier can be seen in the background.
When they are first driving to school, it is Palos Verdes Drive South & West
When they are having coffee waiting for the false "organic drug" buy, they are in San Diego's Balboa Park.