Ellis Haguewood began his irreverent and hilarious school day picture day (SDPD) talks and served a 16-year stint as yearbook adviser. The school's academics became stronger in a climate of increased diversity. Both faculty and curriculum grew much stronger through the 1970s and the 1980s, and enrollment reached nearly 600 students. In 1990, the school constructed the Sue H. Hyde Sports and Physical Education Center, symbolizing that it had become as much an athletic as an academic powerhouse. Thorn retired in 1992, and William Campbell succeeded Thorn as headmaster for three years. In 1995 the Board of Trustees selected Upper School principal Ellis Haguewood to lead the school. Under the leadership of Headmaster Haguewood and Chairman of the Board Ben Adams (1996-2004), MUS implemented a long-term strategic plan. This included a master plan for expanding and updating the physical plant and a massive capital campaign (more than $21 million total) to fund improvements. The Crump Firm's master plan included a new tennis center with a clubhouse, renovation and expansion of the Hull Lower School, erecting a commodious new Campus Center, and razing and replacing the Upper School and the Clack Dining Hall. Construction, including the new Dunavant Upper School, was completed by January 2003. Alumnus Trow Gillespie, who had spearheaded the fundraising, replaced Ben Adams in 2004 as chairman of the Board of Trustees. Bob Loeb became chairman in 2008, followed by Sam Graham in 2013, and Jim Burnett in 2020. Ellis Haguewood retired in June 2017 after 48 years at the school, including 22 as headmaster. The Board of Trustees selected Pete Sanders from Greenville, South Carolina, as the new headmaster. In February 2021 the school announced a new strategic plan, Legacy Forward, with six strategic goals guided by 12 implementation champions representing the Board and the school. Academics MUS enrolls about 640 students from grades 7-12. The student-faculty ratio is 7 to 1, and average class size is 15 students. The school’s intensive academic program emphasizes Advanced Placement and Honors Accelerated courses, offering 22 AP courses for college credit. Historically, more than 90 percent of MUS students score a 3 or above on their AP exams. MUS grades are weighted on a 4.0 scale. Every year a large portion of MUS students are honored by College Board for their performance on standardized tests. MUS claims a 100 percent four-year college acceptance rate. Faculty For the 2020-21 school year,