Siena was founded in 1997 to meet the increasing demand for Catholic education on the Sunshine Coast which had, and continues to enjoy, high rates of population growth. It is located at Sippy Downs which was at that time, a greenfield site on the newly developed Chancellor Park Estate.
The College opened with 98 Year 8 students in four streams and the first Senior class graduated in 2001. In 2003, a fifth stream was added to Year 8 and in 2015 Year 7 was added as part of the Flying Start programme for Queensland schools, bringing the maximum enrolment to 920 students. Siena is part of an educational precinct that also includes the dual campus (P-6 and 7-12) of Chancellor State College, the University of the Sunshine Coast (USC) and Siena Catholic Primary School (P-6), which opened in 2002.
The College is an Archdiocesan College administered by Brisbane Catholic Education (www.bne.catholic.edu.au) and has close links with the Suncoast / Stella Maris Parish (www.saintsonwaves.com).
Siena is named in recognition of St Catherine of Siena (1347 – 1380), described by the Dominican Sisters as “a mystic, theologian and lay woman who was one of the most socially active, most publically influential and most theologically piercing woman in the history of the Church”.