In 2012, the Pennsylvania System of School Assessment ranked Mt. Lebanon High School 6th in regards to their combined math and reading test scores. Mt. Lebanon subsequently was ranked 1st in the Pittsburgh region. In 2013, under the new guidelines established by the Pennsylvania Department of Education. the new accountability system for evaluating public schools, the School Performance Profile, ranked Mt. Lebanon High School 7th, 3rd, and 1st among Public Non-Charter, Non-Magnet High Schools in the Commonwealth of Pennsylvania. Mt. Lebanon School District was ranked 2nd out of 105 western Pennsylvania school districts in 2009 by the Pittsburgh Business Times. The ranking was based on three years of student academic performance on the PSSAs on: math, reading, writing and one year of science. The school district ranked 2nd out of 105 western Pennsylvania school districts and 3rd out of 498 Pennsylvania school districts in 2008 in the Pittsburgh Business Times rating. In 2007, the district ranked 3rd of 500 Pennsylvania school districts for student achievement. The district has won multiple National Blue Ribbon School awards. The high school was rated as one of the Top 500 high schools in the United States by Newsweek in 2000 and 1st in Western Pennsylvania by the Pittsburgh Business Times in 2005. Andrew W. Mellon Middle School won the Don Eichhorn Schools To Watch Award in 2019.
Mt. Lebanon High School
Mt. Lebanon High School is the public secondary school for grades 9–12. It is accredited by the Pennsylvania Department of Education and Middle States Commission on Secondary Schools and Colleges. Enrollment was 1,675 for the 2013–14 school year. Mt. Lebanon High School has been named a National Blue Ribbon School by the U.S. Department of Education each of the three times it requested certification: 1983–84, 1990–91, and 1997–98. The high school ranked second out of 123 western Pennsylvania high schools, by the Pittsburgh Business Times in 2009, for academic achievement as reflected by three years of 11th grade results on: math, reading, writing and one year of science PSSAs. The school colors are royal blue and gold.
Athletics
The sports teams go by the name "Blue Devils" and the mascot is the Blue Devil. The high school has a sports rivalry with Upper St. Clair High School.
Baseball
* 1 PIAA state championship
Basketball
*Boys: 1 PIAA state championship
*Girls: 3 PIAA state championships
Cross Country
*Boys: 12 PIAA state titles
Hockey
*Boys' Ice: 2 PIHL state championships.
Soccer
*Boys: 1 PIAA state championship
*Girls: 1 PIAA state championship
Swimming
*Girls: 1 PIAA state championship
Volleyball
*Girls: 2 PIAA state titles
Wrestling
*Team: 1 PIAA state championship
Extracurricular activities
In the 2002–03 school year, the high school received one of six Outstanding School Awards from the Educational Theatre Association. The school's theater program began in 1930 and has produced a number of notable actors. In 2006, the fine arts department was rated one of eight finest nationwide by the U.S. Department of Education. In 2007, the American Music Conference listed Mt. Lebanon High school as one of the "Best 100 Communities for Music Education". Mount Lebanon Percussion ensemble were invited by the NHL to perform at the 2011 NHL Winter Classic on live TV for the country. The high school's chamber string orchestra, string orchestra, and symphony orchestra played at Carnegie Hall in 1998, 2004, and 2015. The Mt. Lebanon Forensic Team won the Western Pennsylvania District Forensic Championship four years in a row, beginning in 2001. In 2004, the team won the state championship in dramatic interpretation and extemporaneous speaking and then earned a second-place title in extemporaneous speaking at the national competition in Salt Lake City. In 2006, the team captured the Pennsylvania High School Speech League championship, The Devil's Advocate is Mt. Lebanon High School's monthly student newspaper.
