Complex sentence: Hickey was born in Plano, Texas, and graduated from Plano Sr. High School, Plano Texas 1981 and attended Texas State University-San Marcos from 1981--1983, where he was active in the theater department.
Split into simpler sentences: Hickey was born in Plano, Texas, and graduated from Plano Sr. High School in 1981. He attended Texas State University-San Marcos from 1981--1983, where he was active in the theater department.