Complex sentence: In school, Jarrett's participation in the arts, acting in plays as well as writing for the school's creative writing journal, earned him a spot in the 1978 edition of Who's Who Among American High School Students.
Split into simpler sentences: In school, Jarrett was very active in the arts and performed in many plays as well as writing for the school's creative writing journal. He was listed in the 1978 edition of Who's Who Among American High School Students.