On April 14, 1973, Aerosmith played a concert at the school. Millis High School was ranked on the 2020
U.S. News & World Report America's Best High Schools list in the top 7% of schools in the United States, 55th of Boston/Metro Area High schools, and 73rd amongst Massachusetts High Schools. In 1999, Millis Middle/High School underwent a complete renovation. Millis came in tenth in the state in the Math portion of the
MCAS in 2006, while also ranking first in the state with Boston Latin School for English MCAS scores. In 2007, Millis was awarded the
Blue Ribbon School Of Excellence award by the Federal Government under the
No Child Left Behind Act. == Athletics ==