The Stellenberg Girls' Choir was founded in 1999 under the direction of André van der Merwe. From the onset the choir received critical acclaim as an instrument that broadens the horizons of singing at school level.
Stellenberg High School has become well-known in South Africa as a school where choral singing is celebrated.

Since 1999 the choir has achieved the following:
● Overall winners of the Sans Souci Choir Competition (2001).
● Overall winners of the Tygerberg International Eisteddfod (1999 - 2002, 2004).
● Overall winners of the Stellenbosch Eisteddfod (1999 - 2002).
● Overall winners of the National ATKV Choir Competition (1999 - 2001, 2003 - 2005).
● At the Llangollen Eisteddfod in Wales (2002) they were the first-ever school choir to win the category for Adult Female Choirs. In the Choir of the World competition they received a second prize.
● At the Choir Olympiad in Bremen (2004) they won gold medals in the categories "Folklore Acapella" and "Youth Choir Equal Voices". They also attained the highest mark in the competition.
● In 2006 they won the ATKV-Applous Competition for the 8th time.
● At the Llangollen Eisteddfod in Wales (2006) they won the category for Folk Music, as well as the prized trophy, "Choir of the World".
● They were invited to the International Olympics for choirs in Graz during July 2007. One of 6 choirs (out of a total of 464 participating choirs worldwide) to participate in a Worldwide TV production while in Graz.
● In 2009 the choir is placed first on the World Grading List for Choirs in their category (Musica Mundi)