The College Scholastic Ability Test or CSAT is similar to the SAT in the United States. A student must complete the exam to advance into higher education, meaning CSAT scores are used toward college entrance.
This year, JYP Entertainment stated that Dahyun, who's currently a senior at Hanlim Multi Arts School, is scheduled to take the exam. Source Music, the label to Umji and SinB, also revealed that the two idols, currently attending the School of Performing Arts in Seoul, plan to take CSAT.
The '2017 College Scholastic Ability Test' officially starts on November 17. Good luck to Dahyun, Umji, SinB, and everyone else taking it!