Priory is a member of the suburban Metro League, which was reconstituted out of the former ABC League. Priory's mascot is the Ravens. When the school was founded, the sports mascot was the Saints. In the '60s, "under the influence of a charismatic history teacher who specialized in the
Civil War", it was changed to the Rebels, referencing the
Confederate States of America. Initially, this link was obvious and the students used Confederate symbols to show pride in their sports team, including a giant painting of
General Beauregard on the gym walls. Over time, this link weakened and explicit symbols of the Confederacy went away. In 2020, the mascot was officially changed to the Ravens. In the winter of 2004, the hockey team received a bid to play in the Wickenheiser Cup, a memorial tournament hosted by the
Mid-States Club Hockey Association league and named for the late
St. Louis Blues Center
Doug Wickenheiser. Priory won the championship game, played at the
Scottrade Center, giving the school its first state sports title since 1973. In 2007, the hockey team won the Wickenheiser Cup for the second time. In the fall of 2005, the Priory varsity soccer team became the first in the sport in Missouri's high school sports history, and the first since state titles were officially sanctioned by the
Missouri State High School Activities Association, to compete for a full season with no losses or ties. The soccer Rebels led by All-American forward Jimmy Holmes ended the season with a perfect 26-0-0 record, winning the state Class 2 title. In November 2011, the soccer Rebels again produced a perfect season, finishing 27-0-0 and winning the Missouri State High School Class 2 championship with a 2-0 victory over
Trinity High School. In so doing they became the only school in Missouri high school soccer history to twice post a perfect season, with no losses and no ties. The soccer Rebels' team record included 24 shutouts, and they outscored opponents 107-5. In the spring of 2007, the Priory golf team won its first state title, winning by 27 shots. The final team score was 583. A little over half a decade after establishing a lacrosse program, Priory's varsity lacrosse team won its first Missouri Scholastic Lacrosse Association state title in 2016 by defeating O'Fallon (Illinois) 7-6 in the double overtime Division II championship final. ==Notable alumni==