Complex sentence: Her mother, Grace Lina Burtt Park taught Greek and Mathematics at the high school level while her father, Dr. J. Edgar Park was president of Wheaton College from 1926 to 1944.
Split into simpler sentences: Her mother, Grace Lina Burtt Park taught Greek and Mathematics at the high school level. Her father, Dr. J. Edgar Park was president of Wheaton College from 1926 to 1944.