Complex sentence: In 1873 the Thompsons moved to Franklin, Indiana, where they continued their careers as educators and school administrators, but they resigned the following year to assume teaching positions at Indianapolis High School, later known as Shortridge High School.
Split into simpler sentences: In 1873 the Thompsons moved to Franklin, Indiana, where they continued their careers as educators and school administrators. They both resigned the following year to assume teaching positions at Indianapolis High School, which later became known as Shortridge High School.