After setting the national record in the semi-finals of the 200-meter backstroke (.90), Franklin dominated the field in the final with a time of .10, breaking her own national record and winning gold.This was Franklin's first individual world title, and her time in the final was the third-fastest effort of all time.In 2012, she accepted an athletic scholarship to attend the University of California, Berkeley, where she began swimming for coach Teri Mc Keever's California Golden Bears women's swimming team during the 2013–14 academic year.At Cal, Franklin is a four-time individual NCAA champion: winning the 200-yard freestyle in 20, and the 200-yard backstroke and individual medley in 2015.At the age of twelve, Franklin began competing against girls that were much older than she was. Her best result was 37th place in the 100-meter freestyle.By the time Missy graduated from high school she owened half the Colorado High School Athletics Association time records for high school swim.
Swimming the second leg, Franklin had a split of 52.99, the second-best among all participants.After the 2015 NCAA Swimming and Diving Championships, in which Franklin won three individual NCAA titles, Franklin turned professional.She intends to continue working towards a degree in psychology and a minor in education.In the 200-meter backstroke, Franklin finished in second place behind French swimmer Alexianne Castel.
In her first long course world championship meet at the 2011 World Aquatics Championships in Shanghai, Franklin won a total of five medals, three gold, one silver, and one bronze.
Shortly after the 200-meter backstroke final, Franklin competed in the 4×100-meter medley relay with Natalie Coughlin, Rebecca Soni, and Dana Vollmer and won gold with a time of .36, over three seconds ahead of second-place finisher China.