It was originally located on North Summit Ave, the site of present-day Gaithersburg Elementary School.

[6][7][8] Students at Gaithersburg High School average 955 on the SAT,[9] with 488 on verbal and 467 on math.

[11] Elementary School Split Articulations: With the opening of Tubman ES, the board of education approved boundaries that reassigned the following:[12] With these changes, Washington Grove students would now attend Gaithersburg MS instead of Forest Oak MS. As of the 2023-24 school year, Gaithersburg High School projects to be over-enrolled for the next 15 years with its current attendance zones.

[11] To address these concerns, along with overutilization among other nearby schools, the county is conducting a boundary study for the new Crown High School,[13] whose site is within the Rosement ES boundaries and has an expected completion date of August 2027.

[11] In 2022, Gaithersburg High School reported that 59.6% of students were of Hispanic origins, 21.4% were African American, 9.6% were White, and 6.4% were Asian American[9] The student population was 54% male and 46% female.