Complex sentence: In Hamilton County, where most private schools are run by the Archdiocese, nearly a quarter of students (36,684 as of 2007) attend private schools, a rate only second to St. Louis County, Missouri.
Split into simpler sentences: In Hamilton County, most private schools are run by the Archdiocese. There, nearly a quarter of students (36,684) attend private schools, a rate only second to St. Louis County, Missouri.