Complex sentence: Harris attended Kenwood Academy from 1990-1991, where she ran track and played basketball, and she graduated from Academy of Scholastic Achievement, a continuation charter school that caters to at-risk students, in 1993.
Split into simpler sentences: Harris attended Kenwood Academy during the 1990-1991 school year, where she ran track and played basketball. She graduated from Academy of Scholastic Achievement, a continuation charter school that caters to at-risk students, in 1993.