According to a story on MyFoxPhilly.com, Shim was dropped off by her father at Upper Dublin High School on just before 10 a.m. Friday. She was reportedly seen with friends that morning.
Chase-Shim lives in Upper Dublin with her mother. Her father lives in the Harrowgate section of Philadelphia, according to the story.
"Her family said she was last seen wearing navy blue sweat pants and blue and white Nike sneakers with a brown waist-length coat," said Fox 29. "She was seen carrying a pink book bag."
Chase-Shim is described as being 5'5" tall and weighing around 120 pounds with brown eyes and sandy brown shoulder length hair.
If you know anything about the missing teen, please call the Philadelphia Police Department by dialing 9-1-1.
Editor's Note: The story has been updated to reflect an updated version of the MyFoxPhilly.com - Chase-Shim is an Upper Dublin resident.