Among its academic offerings is the McMullen Scholars Program, a four-year advanced-level curriculum requiring extra coursework in humanities, rhetoric and logic, and a senior independent project.

[3] Initially, the school was located in the parish hall of the former St. Peter's Pro-Cathedral but a rise in enrollment led to the purchase of property at Cathedral and Mulberry Streets, which was dedicated by Cardinal James Gibbons in 1891.

[4] Calvert Hall moved again in September 1960, under the direction of Brother Gabriel Cannon, FSC, to its current Towson location.

In addition, Calvert Hall uses a team teaching philosophy and a lecture-seminar format to mimic a university lecture system.

Students who score well on their entrance test and display an outstanding application are invited to interview for the McMullen Scholars Program, which " focuses on an appreciation of the Humanities as a basis for a Christian humanist education" and is headed by its own director.

[7] Scholars are required to complete an independent project their senior year as well as participate in various activities within the program that demonstrate an appreciation for the Arts.

Calvert Hall hosts 40 athletic teams among cross country, football, soccer, volleyball, water polo, basketball, hockey, track and field, squash, swimming, wrestling, baseball, golf, lacrosse, rugby, tennis, and the competitive marching band.

The Calvert Hall varsity football team has won a combined twelve MSA & MIAA “A” conference championships, including their most recent in 2021.

In one of the oldest Catholic school football rivalries in the country, dating back to 1920, Calvert Hall faces its arch-rival, Loyola Blakefield, on Thanksgiving Day morning in the annual Turkey Bowl game played at Johnny Unitas Stadium on the campus of Towson University.

The Calvert Hall baseball team has won twenty-eight MIAA “A” conference championships including a 4–2 victory over Gilman in 2013.

Named after an alumnus who donated $1 million for the state-of-the-art facility, the stadium has a covered grandstand and FieldTurf, designed by Cal Ripken.

[citation needed] The Calvert Hall outdoor and indoor track and field teams have won a combined ten MIAA “A” conference championships, most recently in 2024.

[citation needed] The Calvert Hall band performs numerous times during the year including local parades, home football games, and the Turkey Bowl.