Olathe South High School is a fully accredited public high school located in Olathe, Kansas, USA, serving students in grades 9-12. The school is one of four high schools in the Olathe Unified School District (USD 233). Olathe South High School was recognized as a National School of Excellence for the 1990-91 school year by the U.S. Department of Education, becoming the first high school in Olathe to do so. Olathe South's official colors are blue and gold, and the official mascot is the Falcon.