Complex sentence: She graduated from Spring Grove Area High School where she was a three-time Scholastic All-American as well as the national champion at the 2011 and 2012 YMCA Short Course national championships in the 200 yard butterfly where set a new event record both years.
Split into simpler sentences: She graduated from Spring Grove Area High School, where she was a three-time Scholastic All-American. She was the national champion at the 2011 and 2012 YMCA Short Course national championships in the 200 yard butterfly, where she set a new event record both years.