Complex sentence: In 1887, Slemp entered the Corp of Cadets at Virginia Military Institute in Lexington, Virginia and graduated in 1891, he graduated with the highest grade point average in the school's history--a record that stands today.
Split into simpler sentences: In 1887, Slemp entered the Corp of Cadets at Virginia Military Institute in Lexington, Virginia. In 1891, he graduated with the highest grade point average in the school's history--a record that stands today.