Francis Scott Key High School (FSK or simply "Key") is a four-year public high school in Union Bridge in Carroll County, Maryland, United States.

The school is named after Francis Scott Key, the Frederick County, Maryland native author of the Star Spangled Banner, the national anthem for the United States.

The student population at FSK steadily increased from 1993 to 2007, as shown by the list below.

[5] The Baltimore Sun quoted the superintendent as saying, "we're not going to tolerate this ... it needs to stop permanently".

[6] Francis Scott Key High School has won the following state championships: [7]: 57–58 [7]: 25 [7]: 54 [8]: 53–54