Complex sentence: The Scottsdale Unified School District (SUSD) in Scottsdale, Arizona is Arizona's Most Excelling School District, with 22 schools earning the state's highest rating, Excelling.
Split into simpler sentences: The Scottsdale Unified School District (SUSD) is a school district with its headquarters in Scottsdale, Arizona. Its 22 schools earning the state's highest rating, Excelling.