Additionally, it also includes the Arthur Storer Planetarium, named for the Calvert County resident and the original namesake of Halley's Comet.

A vocational education center is adjacent to the main school building.

In 2000, the Cavaliers captured the Maryland State Division 3A American football championship under the leadership of head coach Jerry Franks.

In 2015, the Calvert High School Varsity Girls Soccer Team also added to Calvert's achievements by winning the Maryland 2A State Championship under the leadership of Dawn Lister and Damon Williams.

Such related activities include the success of the Vex robotics team.