Glen Burnie High School opened in 1923 with a freshman and sophomore class using several rooms in Richard Henry Lee Elementary School. The school moved during the following year to an old elementary school building located on First Avenue SW. Glen Burnie High School was approved by the Maryland State Board of Education in 1924. Prior to this time, Anne Arundel County had only two high schools, which were located in Annapolis (Annapolis High School), and Millersville (Arundel High School, moved to Gambrills in 1949). (now. For a number of years, Glen Burnie High School served the entire northern end of Anne Arundel County.