Complex sentence: Dr. Watkins attended Oak Ridge Elementary School for second grade, before attending Joyner Elementary School for third and fourth grade, and later fifth grade at Sternberger Elementary School in Greensboro, North Carolina.
Split into simpler sentences: Dr. Watkins attended Oak Ridge Elementary School for second grade, before attending Joyner Elementary School for third and fourth grade. He later attended fifth grade at Sternberger Elementary School in Greensboro, North Carolina.