The school offers a variety of courses including outdoor adventure, theater, music, and art.

The parish of Sillejord (later spelled Seljord) was established as a municipality on 1 January 1838 (see formannskapsdistrikt law).

On 1 January 1883, an area of southeastern Seljord (population: 235) was transferred to the neighboring Bø Municipality.

The official blazon is "Gules, a sea serpent Or" (Norwegian: På raud grunn ein gull sjøorm).

The charge has a tincture of Or which means it is commonly colored yellow, but if it is made out of metal, then gold is used.

The design symbolizes the local legend of a sea serpent named Selma who allegedly lives in the lake Seljordsvatn.

The tables below show the current and historical composition of the council by political party.