Complex sentence: The Old Crawfordsville High School, located on East Jefferson Street in Crawfordsville, the county seat of Montgomery County, Indiana, was the town's high school from 1911 to 1992.
Split into simpler sentences: The Old Crawfordsville High School is located on East Jefferson Street in Crawfordsville, the county seat of Montgomery County, Indiana. It served as the town's high school from 1911 to 1992.