Complex sentence: The school was opened in 1959 as a vocational school, grades 10-12, and named after the first school superintendent of Pinellas County, the district in which the school is located.
Split into simpler sentences: The school was opened in 1959 as a vocational school, grades 10-12. It was named after the first superintendent of Pinellas County's school district, the district in which the school is located.